Re: 50mm lenses and flare
> >>> You have to try pretty hard to go wrong with a Pentax 50mm. > >>> > >> Throwing down the gauntlet? > >> > > Looks like the gloves are coming off. > > > I admit only to being smitten. > > >>> You pointing the finger at me? > >>> > >> On the nail. > >> > > Better be quick! > > > Don't be cuticle. > > >>> I'm outta this joint. > >>> > >> Sinew it. > >> > > > > Look at you guys carpal on. > > I've never meta carpal I didn't like Glover-man Chang strikes again. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
David Savage wrote: On 23 February 2010 17:43, mike wilson wrote: You have to try pretty hard to go wrong with a Pentax 50mm. Throwing down the gauntlet? Looks like the gloves are coming off. I admit only to being smitten. You pointing the finger at me? On the nail. Better be quick! Don't be cuticle. I'm outta this joint. Sinew it. Look at you guys carpal on. I've never meta carpal I didn't like -- der...@iinet.net.au http://members.iinet.net.au/~derbyc -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
On 23 February 2010 17:43, mike wilson wrote: >> >> >> >> >> You have to try pretty hard to go wrong with a Pentax 50mm. >> >> >> >> > >> >> >> >> >Throwing down the gauntlet? >> >> >> >> >> >> >> >> Looks like the gloves are coming off. >> >> >> > >> >> >> >I admit only to being smitten. >> >> >> >> >> >> You pointing the finger at me? >> >> > >> >> >On the nail. >> >> >> >> Better be quick! >> > >> >Don't be cuticle. >> >> I'm outta this joint. > > Sinew it. Look at you guys carpal on. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
> >> >> >> >> You have to try pretty hard to go wrong with a Pentax 50mm. > >> >> >> > > >> >> >> >Throwing down the gauntlet? > >> >> >> > >> >> >> Looks like the gloves are coming off. > >> >> > > >> >> >I admit only to being smitten. > >> >> > >> >> You pointing the finger at me? > >> > > >> >On the nail. > >> > >> Better be quick! > > > >Don't be cuticle. > > I'm outta this joint. Sinew it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
>> >> >> >> You have to try pretty hard to go wrong with a Pentax 50mm. >> >> >> > >> >> >> >Throwing down the gauntlet? >> >> >> >> >> >> Looks like the gloves are coming off. >> >> > >> >> >I admit only to being smitten. >> >> >> >> You pointing the finger at me? >> > >> >On the nail. >> >> Better be quick! > >Don't be cuticle. I'm outta this joint. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Cotty wrote: > > > >> >> >> You have to try pretty hard to go wrong with a Pentax 50mm. > >> >> > > >> >> >Throwing down the gauntlet? > >> >> > >> >> Looks like the gloves are coming off. > >> > > >> >I admit only to being smitten. > >> > >> You pointing the finger at me? > > > >On the nail. > > Better be quick! Don't be cuticle. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
>> >> >> You have to try pretty hard to go wrong with a Pentax 50mm. >> >> > >> >> >Throwing down the gauntlet? >> >> >> >> Looks like the gloves are coming off. >> > >> >I admit only to being smitten. >> >> You pointing the finger at me? > >On the nail. Better be quick! -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
2010/2/22 David Savage : > On 22 February 2010 18:18, Cotty wrote: >> >> >> You have to try pretty hard to go wrong with a Pentax 50mm. > >Throwing down the gauntlet? Looks like the gloves are coming off. >>> >>>I admit only to being smitten. >> >> You pointing the finger at me? > > He's actually pointing to the sky. > > But the knuckle & of the middle finger is facing you. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. 4 1/2 fingers up - read between the lines, buster ]=) -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
On 22 February 2010 18:18, Cotty wrote: > > >>> >> You have to try pretty hard to go wrong with a Pentax 50mm. >>> > >>> >Throwing down the gauntlet? >>> >>> Looks like the gloves are coming off. >> >>I admit only to being smitten. > > You pointing the finger at me? He's actually pointing to the sky. But the knuckle & of the middle finger is facing you. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Cotty wrote: > > > >> >> You have to try pretty hard to go wrong with a Pentax 50mm. > >> > > >> >Throwing down the gauntlet? > >> > >> Looks like the gloves are coming off. > > > >I admit only to being smitten. > > You pointing the finger at me? On the nail. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
thank you everybody that was very helpful!!! ecke 2010/2/22 Carlos R : > > > eckinator escribió: > >> >> q...@all: is it generally an ok choice or had i better save up for sump'n >> else and if so then what? >> > > I have an M 50 mm. 1.4 and an F 50 mm. 1.7. Like Godfrey said, the F 1.7 is > better wide open and up to 2.8, and it is also AF and an "A" lens. The M 1.4 > is better built, although I haven't had problems about the build quality of > the F 1.7. > > Carlos > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
eckinator escribió: q...@all: is it generally an ok choice or had i better save up for sump'n else and if so then what? I have an M 50 mm. 1.4 and an F 50 mm. 1.7. Like Godfrey said, the F 1.7 is better wide open and up to 2.8, and it is also AF and an "A" lens. The M 1.4 is better built, although I haven't had problems about the build quality of the F 1.7. Carlos -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
>> >> You have to try pretty hard to go wrong with a Pentax 50mm. >> > >> >Throwing down the gauntlet? >> >> Looks like the gloves are coming off. > >I admit only to being smitten. You pointing the finger at me? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Cotty wrote: > > >> You have to try pretty hard to go wrong with a Pentax 50mm. > > > >Throwing down the gauntlet? > > Looks like the gloves are coming off. I admit only to being smitten. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
John Sessoms wrote: > From: mike wilson > > eckinator wrote: > > > >> > q...@all: is it generally an ok choice or had i better save up for sump'n > >> > else and if so then what? > > > > You have to try pretty hard to go wrong with a Pentax 50mm. > > Throwing down the gauntlet? Not even slightly. But... a good condition 50mm is a superlative tool. It takes another one to render it completely useless. I should know. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
>> You have to try pretty hard to go wrong with a Pentax 50mm. > >Throwing down the gauntlet? Looks like the gloves are coming off. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
From: mike wilson eckinator wrote: > q...@all: is it generally an ok choice or had i better save up for sump'n > else and if so then what? You have to try pretty hard to go wrong with a Pentax 50mm. Throwing down the gauntlet? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
I've used collapsible rubber hoods for years - never a problem & they take up very little space when collapsed. Kenneth Waller http://www.tinyurl.com/272u2f - Original Message - From: "Cotty" Subject: Re: 50mm lenses and flare On 21/2/10, Bob Sullivan, discombobulated, unleashed: Gee, just get a 49mm or 52mm screw in metal lens hood from somebody's scrap bin. Screw-in is better than clip-on (& fall-off). Metal is more protective in crashes than plastic. Any of the standard hoods 50mm lens hoods are wide enough to not vignette on the 1.5x sensor. Bob, good advice. But consider plastic - when you ding a metal hood, it often dents where plastic will usually retain its shape. Or shatter dramatically! Personally I have always had clip-ons and never had a problem with them falling off - better still, they are usually reversible and will clip on in the other direction when not in use. Also, if you consider that a 1.5 crop sensor is seeing 'less' of the picture-taking area with a given lens than a 35mm film camera, then a deeper hood would seem a better choice - and of course not too deep otherwise it will vignette. .02c -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche -- http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
On Feb 21, 2010, at 6:30 PM, Bob Sullivan wrote:
> Gee, just get a 49mm or 52mm screw in metal lens hood from somebody's scrap
> bin.
> Screw-in is better than clip-on (& fall-off). Metal is more
> protective in crashes than plastic.
> Any of the standard hoods 50mm lens hoods are wide enough to not
> vignette on the 1.5x sensor.
> Regards, Bob S.
>
Yep. I use a metal lens hood from a 135/3.5 super takumar on my 50/1.4. It's
the perfect hood for a 50 on an APS sensor.
Paul
> On Sun, Feb 21, 2010 at 3:13 PM, P. J. Alling
> wrote:
>> That's not going to work on the M50 f1.7 or the FA 50 f1.4 without a step
>> ring. The filter he want's is the one that came with the M 85mm f2 and M
>> 100 f2.8. I use that one regularly with my 43mm limited. Be aware however
>> the clips on that hood are made of "Mouser Hair"® I ended up destroying an
>> old scratched up UV filter (HOYA by the way), and gluing it to the hood for
>> the threads.
>>
>> On 2/21/2010 3:06 PM, Cotty wrote:
>>>
>>> On 21/2/10, Godfrey DiGiorgi, discombobulated, unleashed:
>>>
>>>
>>>>
>>>> I used a number of the 50mm lenses when I was shooting with Pentax
>>>> cameras: M50/1.4, A50/1.4, A50/1.7, F50/1.7, FA50/1.4 and A50/2.8
>>>> Macro. There's no substantive difference in the tendency to flare for
>>>> any of the 50/1.4s, and not much different to the 50/1.7s. A deep lens
>>>> hood is required for the DSLR bodies, much deeper than the original
>>>> equipment hood (you need a hood for about an 85mm lens).
>>>>
>>>
>>> Indeed. When I used the 50/1.2 on a 1.6x crop sensor camera, I found a
>>> great Pentax lenshood that fit and worked a treat. Better: it was a clip
>>> on - can't remember the model but you can see it here, and the eagle-
>>> eyed will ID it:
>>>
>>> <http://www.cottysnaps.com/snaps/mods/k50ineos.html>
>>>
>>> --
>>>
>>>
>>> Cheers,
>>> Cotty
>>>
>>>
>>> ___/\__
>>> || (O) | People, Places, Pastiche
>>> -- http://www.cottysnaps.com
>>> _
>>>
>>>
>>>
>>>
>>
>>
>> --
>> {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0
>> Courier New;}}
>> \viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the
>> interface subtly weird.\par
>> }
>>
>>
>> --
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>> PDML@pdml.net
>> http://pdml.net/mailman/listinfo/pdml_pdml.net
>> to UNSUBSCRIBE from the PDML, please visit the link directly above and
>> follow the directions.
>>
>
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Re: 50mm lenses and flare
On 21/2/10, Bob Sullivan, discombobulated, unleashed: >Gee, just get a 49mm or 52mm screw in metal lens hood from somebody's >scrap bin. >Screw-in is better than clip-on (& fall-off). Metal is more >protective in crashes than plastic. >Any of the standard hoods 50mm lens hoods are wide enough to not >vignette on the 1.5x sensor. Bob, good advice. But consider plastic - when you ding a metal hood, it often dents where plastic will usually retain its shape. Or shatter dramatically! Personally I have always had clip-ons and never had a problem with them falling off - better still, they are usually reversible and will clip on in the other direction when not in use. Also, if you consider that a 1.5 crop sensor is seeing 'less' of the picture-taking area with a given lens than a 35mm film camera, then a deeper hood would seem a better choice - and of course not too deep otherwise it will vignette. .02c -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche -- http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Gee, just get a 49mm or 52mm screw in metal lens hood from somebody's scrap bin.
Screw-in is better than clip-on (& fall-off). Metal is more
protective in crashes than plastic.
Any of the standard hoods 50mm lens hoods are wide enough to not
vignette on the 1.5x sensor.
Regards, Bob S.
On Sun, Feb 21, 2010 at 3:13 PM, P. J. Alling
wrote:
> That's not going to work on the M50 f1.7 or the FA 50 f1.4 without a step
> ring. The filter he want's is the one that came with the M 85mm f2 and M
> 100 f2.8. I use that one regularly with my 43mm limited. Be aware however
> the clips on that hood are made of "Mouser Hair"® I ended up destroying an
> old scratched up UV filter (HOYA by the way), and gluing it to the hood for
> the threads.
>
> On 2/21/2010 3:06 PM, Cotty wrote:
>>
>> On 21/2/10, Godfrey DiGiorgi, discombobulated, unleashed:
>>
>>
>>>
>>> I used a number of the 50mm lenses when I was shooting with Pentax
>>> cameras: M50/1.4, A50/1.4, A50/1.7, F50/1.7, FA50/1.4 and A50/2.8
>>> Macro. There's no substantive difference in the tendency to flare for
>>> any of the 50/1.4s, and not much different to the 50/1.7s. A deep lens
>>> hood is required for the DSLR bodies, much deeper than the original
>>> equipment hood (you need a hood for about an 85mm lens).
>>>
>>
>> Indeed. When I used the 50/1.2 on a 1.6x crop sensor camera, I found a
>> great Pentax lenshood that fit and worked a treat. Better: it was a clip
>> on - can't remember the model but you can see it here, and the eagle-
>> eyed will ID it:
>>
>> <http://www.cottysnaps.com/snaps/mods/k50ineos.html>
>>
>> --
>>
>>
>> Cheers,
>> Cotty
>>
>>
>> ___/\__
>> || (O) | People, Places, Pastiche
>> -- http://www.cottysnaps.com
>> _
>>
>>
>>
>>
>
>
> --
> {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0
> Courier New;}}
> \viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the
> interface subtly weird.\par
> }
>
>
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> follow the directions.
>
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Re: 50mm lenses and flare
On 21/2/10, mike wilson, discombobulated, unleashed: >You have to try pretty hard to go wrong with a Pentax 50mm. Mark. Wise words. -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche -- http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
eckinator wrote: q...@all: is it generally an ok choice or had i better save up for sump'n else and if so then what? You have to try pretty hard to go wrong with a Pentax 50mm. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
That's not going to work on the M50 f1.7 or the FA 50 f1.4 without a
step ring. The filter he want's is the one that came with the M 85mm f2
and M 100 f2.8. I use that one regularly with my 43mm limited. Be
aware however the clips on that hood are made of "Mouser Hair"® I
ended up destroying an old scratched up UV filter (HOYA by the way), and
gluing it to the hood for the threads.
On 2/21/2010 3:06 PM, Cotty wrote:
On 21/2/10, Godfrey DiGiorgi, discombobulated, unleashed:
I used a number of the 50mm lenses when I was shooting with Pentax
cameras: M50/1.4, A50/1.4, A50/1.7, F50/1.7, FA50/1.4 and A50/2.8
Macro. There's no substantive difference in the tendency to flare for
any of the 50/1.4s, and not much different to the 50/1.7s. A deep lens
hood is required for the DSLR bodies, much deeper than the original
equipment hood (you need a hood for about an 85mm lens).
Indeed. When I used the 50/1.2 on a 1.6x crop sensor camera, I found a
great Pentax lenshood that fit and worked a treat. Better: it was a clip
on - can't remember the model but you can see it here, and the eagle-
eyed will ID it:
<http://www.cottysnaps.com/snaps/mods/k50ineos.html>
--
Cheers,
Cotty
___/\__
|| (O) | People, Places, Pastiche
-- http://www.cottysnaps.com
_
--
{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Courier
New;}}
\viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the
interface subtly weird.\par
}
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Re: 50mm lenses and flare
Prices are likely to go up, for some reason they're more expensive than
the essentially identical FA 1.7 which is a lot rarer
On 2/21/2010 1:42 PM, Godfrey DiGiorgi wrote:
On Sun, Feb 21, 2010 at 9:42 AM, eckinator wrote:
Since we're on the topic already: how much would be a reasonable price
for the smc-F 50/1.7 in B condition?
TIA ecke
The last one I had was sold in 2006 for $135 or so, IIRC. It was in
EXC condition.
--
{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Courier
New;}}
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interface subtly weird.\par
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Re: 50mm lenses and flare
That's the hood for the Pentax 85/1.8 and other similar models: it works well. The B+W Tele hood also works well. On Sunday, February 21, 2010, Cotty wrote: > On 21/2/10, Godfrey DiGiorgi, discombobulated, unleashed: > >>I used a number of the 50mm lenses when I was shooting with Pentax >>cameras: M50/1.4, A50/1.4, A50/1.7, F50/1.7, FA50/1.4 and A50/2.8 >>Macro. There's no substantive difference in the tendency to flare for >>any of the 50/1.4s, and not much different to the 50/1.7s. A deep lens >>hood is required for the DSLR bodies, much deeper than the original >>equipment hood (you need a hood for about an 85mm lens). > > Indeed. When I used the 50/1.2 on a 1.6x crop sensor camera, I found a > great Pentax lenshood that fit and worked a treat. Better: it was a clip > on - can't remember the model but you can see it here, and the eagle- > eyed will ID it: > > <http://www.cottysnaps.com/snaps/mods/k50ineos.html> > > -- > > > Cheers, > Cotty > > > ___/\__ > || (O) | People, Places, Pastiche > -- http://www.cottysnaps.com > _ > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Can't say what my "EXC" really means compared to your "B"... It's very subjective. The 50/1.7 is an excellent choice in 50s. It's sharper wide open than the 1.4 model and handles close up work better. The lens formula is the same from M to A to F. The As were cheapened with a plastic aperture ring that occasionally fails but is very fixable. The f/1.4 models are only slightly faster and have slightly smoother bokeh, but past f/2.8 it's hard to tell a difference; they are made a little better, however. Stick with A or FA models in a 50/1.4, they share the same optical formula and are superior performers to the earlier models. On Sunday, February 21, 2010, eckinator wrote: > 2010/2/21 Godfrey DiGiorgi : >> >> The last one I had was sold in 2006 for $135 or so, IIRC. It was in >> EXC condition. > > ty godfrey =) > eBay item 220556654576 > it is at € 99 now which is interestingly just those $135 but there is > still some time to go so it will go a tad bit higher yet at least > how does this condition, rated B by yours truly to your EXC please? > seller claims fungus, haze and scratch free > > q...@all: is it generally an ok choice or had i better save up for sump'n > else and if so then what? > > thanks again > ecke > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
perhaps the one that comes with the dfa 50? 2010/2/21 Cotty : > On 21/2/10, Godfrey DiGiorgi, discombobulated, unleashed: > >>I used a number of the 50mm lenses when I was shooting with Pentax >>cameras: M50/1.4, A50/1.4, A50/1.7, F50/1.7, FA50/1.4 and A50/2.8 >>Macro. There's no substantive difference in the tendency to flare for >>any of the 50/1.4s, and not much different to the 50/1.7s. A deep lens >>hood is required for the DSLR bodies, much deeper than the original >>equipment hood (you need a hood for about an 85mm lens). > > Indeed. When I used the 50/1.2 on a 1.6x crop sensor camera, I found a > great Pentax lenshood that fit and worked a treat. Better: it was a clip > on - can't remember the model but you can see it here, and the eagle- > eyed will ID it: > > <http://www.cottysnaps.com/snaps/mods/k50ineos.html> > > -- > > > Cheers, > Cotty > > > ___/\__ > || (O) | People, Places, Pastiche > -- http://www.cottysnaps.com > _ > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
On 21/2/10, Godfrey DiGiorgi, discombobulated, unleashed: >I used a number of the 50mm lenses when I was shooting with Pentax >cameras: M50/1.4, A50/1.4, A50/1.7, F50/1.7, FA50/1.4 and A50/2.8 >Macro. There's no substantive difference in the tendency to flare for >any of the 50/1.4s, and not much different to the 50/1.7s. A deep lens >hood is required for the DSLR bodies, much deeper than the original >equipment hood (you need a hood for about an 85mm lens). Indeed. When I used the 50/1.2 on a 1.6x crop sensor camera, I found a great Pentax lenshood that fit and worked a treat. Better: it was a clip on - can't remember the model but you can see it here, and the eagle- eyed will ID it: <http://www.cottysnaps.com/snaps/mods/k50ineos.html> -- Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche -- http://www.cottysnaps.com _ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
On Feb 21, 2010, at 10:41 AM, Godfrey DiGiorgi wrote: Be sure you're using a good, deep lens hood. That is one thing my 50s don't have. Anybody have recommendations? It's either that or arrange with the subjects that you can reposition yourself and them such that these windows are not in the frame. That may not be possible given the room. It's certainly not possible during belt tests, but my senseis are now a lot more enthused about doing some "aikido portraits" with me, so I'll be able to bring my gear to the dojo and set things up to my best advantage for those. On Sat, Feb 20, 2010 at 3:48 PM, Larry Colen wrote: Our dojo is doing belt tests this week. I was taking pictures this morning and my p-fa 50/1.4 had lots of nasty flare from the light coming in through the windows. While the remaining tests will be in the evening, for future reference would the M 50/1.7 or the supertakumar 50/1.4 be noticeably better at reducing flare? Since I needed to keep changing lenses to get the right focal length, I was really wishing I had a 16-50. I expect that for the evening tests, I'll wish I had a 16-50 and a K-x. -- Larry Colen l...@red4est.com sent from i4est -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Larry Colen l...@red4est.com sent from i4est -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
2010/2/21 Godfrey DiGiorgi : > > The last one I had was sold in 2006 for $135 or so, IIRC. It was in > EXC condition. ty godfrey =) eBay item 220556654576 it is at € 99 now which is interestingly just those $135 but there is still some time to go so it will go a tad bit higher yet at least how does this condition, rated B by yours truly to your EXC please? seller claims fungus, haze and scratch free q...@all: is it generally an ok choice or had i better save up for sump'n else and if so then what? thanks again ecke -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
On Sun, Feb 21, 2010 at 9:42 AM, eckinator wrote: > Since we're on the topic already: how much would be a reasonable price > for the smc-F 50/1.7 in B condition? > TIA ecke The last one I had was sold in 2006 for $135 or so, IIRC. It was in EXC condition. -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Be sure you're using a good, deep lens hood. I used a number of the 50mm lenses when I was shooting with Pentax cameras: M50/1.4, A50/1.4, A50/1.7, F50/1.7, FA50/1.4 and A50/2.8 Macro. There's no substantive difference in the tendency to flare for any of the 50/1.4s, and not much different to the 50/1.7s. A deep lens hood is required for the DSLR bodies, much deeper than the original equipment hood (you need a hood for about an 85mm lens). The A50/2.8 has less tendency to flare as its front element is so deeply inset. That said, there are always situations which will cause some flare. Avoiding them is the only solution. What I'd do for the shooting situations in the galleries you showed (nice work, btw) is to have with me some heavy, white backdrop paper and cover those windows, preferably from the outside if possible. That will reduce the light coming through them enormously relative to your primary subject and be a much more successful exposure situation. It's either that or arrange with the subjects that you can reposition yourself and them such that these windows are not in the frame. That may not be possible given the room. On Sat, Feb 20, 2010 at 3:48 PM, Larry Colen wrote: > Our dojo is doing belt tests this week. I was taking pictures this morning > and my p-fa 50/1.4 had lots of nasty flare from the light coming in through > the windows. While the remaining tests will be in the evening, for future > reference would the M 50/1.7 or the supertakumar 50/1.4 be noticeably better > at reducing flare? > > Since I needed to keep changing lenses to get the right focal length, I was > really wishing I had a 16-50. I expect that for the evening tests, I'll > wish I had a 16-50 and a K-x. > > -- > Larry Colen l...@red4est.com sent from i4est > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- Godfrey godfreydigiorgi.posterous.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Since we're on the topic already: how much would be a reasonable price for the smc-F 50/1.7 in B condition? TIA ecke -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Larry, Those are some pretty dynamic photos. Good job! Regards, Bob S. On Sun, Feb 21, 2010 at 5:13 AM, Larry Colen wrote: > > On Feb 20, 2010, at 3:48 PM, Larry Colen wrote: > >> Our dojo is doing belt tests this week. I was taking pictures this >> morning and my p-fa 50/1.4 had lots of nasty flare from the light coming in >> through the windows. While the remaining tests will be in the evening, for >> future reference would the M 50/1.7 or the supertakumar 50/1.4 be noticeably >> better at reducing flare? >> >> Since I needed to keep changing lenses to get the right focal length, I >> was really wishing I had a 16-50. I expect that for the evening tests, I'll >> wish I had a 16-50 and a K-x. > > For them that are interested, photos from today's belt tests (except TK's > because I was a bit busy) > white and blue: > http://www.flickr.com/photos/ellarsee/sets/72157623351131397/ > Sylvia: http://www.flickr.com/photos/ellarsee/sets/72157623351298219/ > Nick: http://www.flickr.com/photos/ellarsee/sets/72157623478133602/ > The good news is that my keeper ratio seemed to improve throughout the day. > Monday evening, however, I'll have to start all over with different light. > At least it won't keep changing as the sun goes behind clouds and comes out, > and I won't have the killer back lighting. > > -- > Larry Colen l...@red4est.com sent from i4est > > > > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
On Feb 20, 2010, at 3:48 PM, Larry Colen wrote: Our dojo is doing belt tests this week. I was taking pictures this morning and my p-fa 50/1.4 had lots of nasty flare from the light coming in through the windows. While the remaining tests will be in the evening, for future reference would the M 50/1.7 or the supertakumar 50/1.4 be noticeably better at reducing flare? Since I needed to keep changing lenses to get the right focal length, I was really wishing I had a 16-50. I expect that for the evening tests, I'll wish I had a 16-50 and a K-x. For them that are interested, photos from today's belt tests (except TK's because I was a bit busy) white and blue: http://www.flickr.com/photos/ellarsee/sets/72157623351131397/ Sylvia: http://www.flickr.com/photos/ellarsee/sets/72157623351298219/ Nick: http://www.flickr.com/photos/ellarsee/sets/72157623478133602/ The good news is that my keeper ratio seemed to improve throughout the day. Monday evening, however, I'll have to start all over with different light. At least it won't keep changing as the sun goes behind clouds and comes out, and I won't have the killer back lighting. -- Larry Colen l...@red4est.com sent from i4est -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses and flare
Since the fa and the Super Takumar have pretty much identical optical
formulas and the FA has much improved coatings I doubt that the Tak.
will be better. I always found the 50 f1.7 to be very good but in
extreme situation you'll get flair with any lens.
On 2/20/2010 6:48 PM, Larry Colen wrote:
Our dojo is doing belt tests this week. I was taking pictures this
morning and my p-fa 50/1.4 had lots of nasty flare from the light
coming in through the windows. While the remaining tests will be in
the evening, for future reference would the M 50/1.7 or the
supertakumar 50/1.4 be noticeably better at reducing flare?
Since I needed to keep changing lenses to get the right focal length,
I was really wishing I had a 16-50. I expect that for the evening
tests, I'll wish I had a 16-50 and a K-x.
--
Larry Colen l...@red4est.com sent from i4est
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interface subtly weird.\par
}
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the directions.
50mm lenses and flare
Our dojo is doing belt tests this week. I was taking pictures this morning and my p-fa 50/1.4 had lots of nasty flare from the light coming in through the windows. While the remaining tests will be in the evening, for future reference would the M 50/1.7 or the supertakumar 50/1.4 be noticeably better at reducing flare? Since I needed to keep changing lenses to get the right focal length, I was really wishing I had a 16-50. I expect that for the evening tests, I'll wish I had a 16-50 and a K-x. -- Larry Colen l...@red4est.com sent from i4est -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: 50mm lenses test pages: help with japanese translation (help with math)
- Original Message - From: "Mark Cassino" Subject: Re: 50mm lenses test pages: help with japanese translation (help with math) I> Is my math wrong on that, or are most of these lenses equal on the *ist-D / DS? And for that matter, more or less equal with most films except the highest performing slide films (I seem to recall that Velvia could resolve something like 160 lpm? Or maybe that was DPI... My memory is about as good as my math.) The high resolution number is a 1000:1 (10 stop knife edge) test target. For a more practical resolution, you want to look at the 1.6:1 (about a 1 stop transition) resolution numbers. You will note, they are a much less impressive set of numbers. William Robb
Re: 50mm lenses test pages: help with japanese translation (help with math)
On 14 Apr 2005 at 21:10, Mark Cassino wrote: > I can't get the original page to load, so thanks to Fred for posting the > extracted page. > > I'm rather surprised by how poorly the FA 1.7 does at wider apertures. > Similarly surprised that the Ricoh 50mm f2.0 did so poorly. > > I'm trying to put these numbers into perspective with the *ist-D > > Let's see - 23.5mm x a5.7 mm sensor with 3008 x 2008 pixels works out to > about 128 pixels per mm. With LPM being a factor of on half pixels per mm > (it takes one pixel for the line, one for the background) then the > theoretical maximum resolution of the *ist-D / DS is only 64 lpm > > Is my math wrong on that, or are most of these lenses equal on the *ist-D / > DS? > And for that matter, more or less equal with most films except the highest > performing slide films (I seem to recall that Velvia could resolve something > like 160 lpm? Or maybe that was DPI... My memory is about as good as my > math.) Testing the resolution *ist D using USAF chart I found that the camera/best lens combos can manage no more than about 46lppm absolute resolution. >From the archives: Subject: RE: *ist D resolution (was:Soon to be new istD owners) Date: Tue, 13 Jan 2004 09:24:46 +1000 On 12 Jan 2004 at 22:28, Jens Bladt wrote: > Hi Rob > Hmmm. Not so sure about how to test lens resolution on film. > I'm sure 100 linepairs pr. mm has been occationally achieved on film. Hi Jens, Plenty of resources here: http://members.ozemail.com.au/~distudio/lenstesting/ > Simple math tels me that 3000 pixel covering 24mm gives 125 pixel/mm. But you > need three to make a PAIR of lines. Gives you appr. 43 line pairs/mm, right. > So, using a 6MP body is like using the poorest lens ever made by Pentax - > resoluton wise, of cource. Sure, the Kell factor in this case appears to be about 0.7 therefore the resolution in lpmm can effectively be calculated as 3008pixels/23.5mm/2pixels*0.7kell factor=44.8lpmm. I used a conventional test chart in conjunction with a very high resolution lens in order to reduce it's effect on the measurement and I calculated an optical resolution of 44.6lpmm and this was before I made any theoretical calculations. > Like 100 lp/mm seemed to be "the sound wall" of analog photography, it seems > appr. 5000 dpi is "the sound wall" of current digital photography. But I'm > sure they'll break throug this sometime soon. SONY is now marketing a 8MP > consumer camera - with a 2.0 Carl Zeiss lens - for appr. 1000$ (Sony DSC > F-828). Maybe we'll get there earlier than we relly want. I don't think so, I doubt there will be that much to gain by making smaller pixels, look at the noise generated by the Pentax *istD at higher ISO already. Smaller pixels will reduce the effective exposure latitude, colour accuracy and increase the noise floor. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: 50mm lenses test pages: help with japanese translation (help with math)
I can't get the original page to load, so thanks to Fred for posting the extracted page. I'm rather surprised by how poorly the FA 1.7 does at wider apertures. Similarly surprised that the Ricoh 50mm f2.0 did so poorly. I'm trying to put these numbers into perspective with the *ist-D Let's see - 23.5mm x a5.7 mm sensor with 3008 x 2008 pixels works out to about 128 pixels per mm. With LPM being a factor of on half pixels per mm (it takes one pixel for the line, one for the background) then the theoretical maximum resolution of the *ist-D / DS is only 64 lpm Is my math wrong on that, or are most of these lenses equal on the *ist-D / DS? And for that matter, more or less equal with most films except the highest performing slide films (I seem to recall that Velvia could resolve something like 160 lpm? Or maybe that was DPI... My memory is about as good as my math.) - MCC - - - - - - - - - - - - - - - - - - - - Mark Cassino Photography Kalamazoo, MI www.markcassino.com - - - - - - - - - - - - - - - - - - - - - Original Message - From: "Fred" <[EMAIL PROTECTED]> To: Sent: Wednesday, April 13, 2005 11:57 AM Subject: Re: 50mm lenses test pages: help with japanese translation Below is a link to an interesting page with test charts for all major 50mm lenses out there. Just for simplicity (to make it easier to compare the K-mount 50's), I put the Pentax and Ricoh lens charts on a page at http://www.cetussoft.com/pentax/xitek50/ If anyone can come up with English translations for the Chinese comments below each chart (on the original site), I'll add them, too. I think that the charts pretty much confirm my own experiences, although I'm comparing all A lenses (substituting my A models for the FA 50/1.4 and FA 50/1.7 lenses). That is to say, I ~still~ think that - 1. My favorite 50 is the A 50/1.4. 2. The A 50/1.2 is a better lens than some people give it credit for. 3. The A 50/2 has a high "bang for the buck ratio". 4. And then there's the A 50/1.7... Fred
Re: 50mm lenses test pages: help with simplified Chinese translation
On 13 Apr 2005 at 16:05, Mark Roberts wrote: > Thanks for that Fred. > Kind of odd testing, IMHO: I was expecting the two curves in each graph > to represent sagittal and tangential MTF numbers, not center and edge. That would be appropriate for an MTF graph, ie contrast ratio vs distance from the frame centre for a specific f-stop, these graphs are LPM vs f-stop for centre/edge, quite different information. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: 50mm lenses test pages: help with japanese translation
On 13 Apr 2005 at 19:43, John Whittingham wrote: > The graphs look so similar to the AP tests I think I could probably cross > reference, I'm sure I've got the tests on both A 50mm 1.2 and K 50mm 1.2 some > where Contrast on the K lens is poorer across the board. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: 50mm lenses test pages: help with japanese translation
On 13 Apr 2005 at 11:57, Fred wrote: > I think that the charts pretty much confirm my own experiences, although > I'm comparing all A lenses (substituting my A models for the FA 50/1.4 and > FA 50/1.7 lenses). That is to say, I ~still~ think that - > > 1. My favorite 50 is the A 50/1.4. > > 2. The A 50/1.2 is a better lens than some people give it credit for. Pretty much my experience too (not that it would be new to anyone who has known me a while), the A50/1.2 is a bit of a favourite of mine. It's not super sharp or contrasty wide open but it's nice and consistent across the frame and gets better stop by stop until f5.6-6 when it's superb, déjà vu maybe? :-) Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: 50mm lenses test pages: help with japanese translation
Quoting Fred <[EMAIL PROTECTED]>: > > Below is a link to an interesting page with test charts for all major > > 50mm lenses out there. > > Actually, I thought that Canon is conspicuous in its absence. Doesn't > Canon make 50mm lenses? (I have to believe that Canon does...) > They do, their FD/New FD 50.1.4 is often referred to as "the reference" lens as it's colour corection, sharpeness, contrast, etc are so exemplary. This email was sent from Netspace Webmail: http://www.netspace.net.au
Re: 50mm lenses test pages: help with simplified Chinese translation
>>Thanks, Godfrey. I just updated my "Xitek K-Mount 50mm Lens Tests" page >>with Babel Fish translations. (I'd appreciate it if someone would check to >>see that I put the right text with the right lens in each case - thanks in >>advance.) >> >>The URL - http://www.cetussoft.com/pentax/xitek50/ > Thanks for that Fred. No problem. > Kind of odd testing, IMHO: I was expecting the two curves in each graph > to represent sagittal and tangential MTF numbers, not center and edge. Well, it depends on what sort of testing you're used to looking at, I guess. Having done a bit of resolution testing myself (high-contrast USAF targets) ( http://www.cetussoft.com/pentax/resolutn.htm ), the idea of center and edge (or corner) sharpness in lpm is familiar, while MTF charts seem a bit "alien" - . Fred
Re: 50mm lenses test pages: help with simplified Chinese translation
Fred <[EMAIL PROTECTED]> wrote: >> Babelfish does a useful job of translating the page from simplified >> Chinese to English: http://babelfish.altavista.com/ > >Thanks, Godfrey. I just updated my "Xitek K-Mount 50mm Lens Tests" page >with Babel Fish translations. (I'd appreciate it if someone would check to >see that I put the right text with the right lens in each case - thanks in >advance.) > >The URL - http://www.cetussoft.com/pentax/xitek50/ Thanks for that Fred. Kind of odd testing, IMHO: I was expecting the two curves in each graph to represent sagittal and tangential MTF numbers, not center and edge. -- Mark Roberts Photography and writing www.robertstech.com
Re: 50mm lenses test pages: help with japanese translation
> The A 50/1.2 and the A 50/2 were never replaced with autofocus versions, > and they (and a few other A and A* lenses) have had a "life" for many > years after most of the other A lenses were "retired". I really should have included "a few K lenses" in the above comment, too... Fred
Re: 50mm lenses test pages: help with japanese translation
> Still, yes, it'd be ~great~ if they had "tested 'em all" while they > were at it - . The graphs look so similar to the AP tests I think I could probably cross reference, I'm sure I've got the tests on both A 50mm 1.2 and K 50mm 1.2 some where John
Re: 50mm lenses test pages: help with japanese translation
> It'a pitty they didn't test the K 50mm f/1.2 for comparison with the A. Well, I guess they tested just the available-as-new Pentax 50's. The A 50/1.2 and the A 50/2 were never replaced with autofocus versions, and they (and a few other A and A* lenses) have had a "life" for many years after most of the other A lenses were "retired". Still, yes, it'd be ~great~ if they had "tested 'em all" while they were at it - . Fred
Re: 50mm lenses test pages: help with japanese translation
>> Oh, and what's "IYNSHO"? ;-) > In your not so humble opinion ;-)) Ah, then you know me pretty well, Shel - . Fred
Re: Re: 50mm lenses test pages: help with japanese translation
John Whittingham mused: > > > JANET's a little sleepy this afternoon. 8-) > > Nothing new, I've got a faster connection at home these days - Pathetic! That's not surprising. One of my friends now has 20 megabit optical service to his house, and just yesterday I received a mailing offering me 4/1.5 megabit (for $100/month).
Re: 50mm lenses test pages: help with japanese translation
>> I doubt it. The M series was a major redesign from the K, and the look >> I get from the K50/1.4 and the M50/1.4 is different. > Well, looking at bdmitrov's pages, the K, M, and A all depart somewhat > in the relationship of elements' curvature and thickness. Whether it's > the drawing or what, i do not know. I have heard it said repeatedly on > various forums that the 50/1.4 got a redesign between the M and A > series, and that the A series is a superior performer. More than that I > don't know. My opinion (and it's merely an opinion, based on various experiences and "hunches") is that the K is virtually the same optically as the SMC Takumar and the S-M-C Takumar, that the M is a little different from the K, that the A is very slightly different from the M, and that the A, F, and FA are essentially identical optically to each other. However, the differences in all cases are pretty small, and I still say that Pentax has never made a bad (or even a mediocre) 50/1.4. > I do know the A50/1.4 is great. :-) Indeed !!! ;-) Fred
Re: 50mm lenses test pages: help with japanese translation
In your not so humble opinion ;-)) Shel > [Original Message] > From: Fred <[EMAIL PROTECTED]> > Oh, and what's "IYNSHO"? ;-)
Re: 50mm lenses test pages: help with japanese translation
It'a pitty they didn't test the K 50mm f/1.2 for comparison with the A. John -- Original Message --- From: Fred <[EMAIL PROTECTED]> To: Fred Sent: Wed, 13 Apr 2005 13:31:49 -0400 Subject: Re: 50mm lenses test pages: help with japanese translation > >> Below is a link to an interesting page with test charts for all major > >> 50mm lenses out there. > > > Just for simplicity (to make it easier to compare the K-mount 50's), I put > > the Pentax and Ricoh lens charts on a page at > > > http://www.cetussoft.com/pentax/xitek50/ > > > If anyone can come up with English translations for the Chinese comments > > below each chart (on the original site), I'll add them, too. > > I just updated the page with Babel Fish translations (from simplified > Chinese). > > Fred --- End of Original Message ---
Re: 50mm lenses test pages: help with japanese translation
> My favorite 50 is the K50/1.4 - most especially for B&W use. Still > looking for a better sample than the one I now have. BTW, Fred, how does > the K compare to the A, IYNSHO? Hi, Shel. I'm sorry. but I don't remember the K that well anymore - I haven't had a K version of the 50/1.4 in quite a while. About the only thing I could say for sure is that the K had a nicer focus feel to it (although the A is not bad, and I've gotten used to it - ). I think there might have been a small color difference (although I honestly couldn't say for sure what the difference is now - sorry). I've pretty much "standardized" on the A lenses (and A* lenses), keeping and/or obtaining earlier or later lenses when there's a reasonably compelling reason of some sort to have one of the other lenses (e.g., K 200/2.5, F* 300/4.5, FA* 80-200/2.8, etc.). The differences between the K and A 50/1.4's were pretty small (in my opinion), or I'd probably still have a K 50/1.4 - . Oh, and what's "IYNSHO"? ;-) Fred
Re: 50mm lenses test pages: help with japanese translation
If the size, shape, and placements of the elements change, which I believe was the case, and which appears to be shown in the diagrams on Boz's page, I'd suggest that it's a major redesign. Of course, the changes may have been small by appearance, and one may say that, based upon appearance, the changes were minor, but then we're getting into the "how many hairs make up a moustache" scenario. The diagrams, if accurate, even approximately accurate, certainly don't take into account any changes in the glass used and their various aspects of the glass. You say minor, I say major, let's let the whole thing rest ... ;-)) Shel > [Original Message] > From: Peter J. Alling > I'm not sure that the M50 1.4 would be called a major redesign, (except > for the mechanics that is), > but all of the tooling had to be changed which along with improvements > in coatings may account for some difference in results.
Re: 50mm lenses test pages: help with japanese translation
>> Below is a link to an interesting page with test charts for all major >> 50mm lenses out there. > Just for simplicity (to make it easier to compare the K-mount 50's), I put > the Pentax and Ricoh lens charts on a page at > http://www.cetussoft.com/pentax/xitek50/ > If anyone can come up with English translations for the Chinese comments > below each chart (on the original site), I'll add them, too. I just updated the page with Babel Fish translations (from simplified Chinese). Fred
Re: 50mm lenses test pages: help with simplified Chinese translation
> Babelfish does a useful job of translating the page from simplified > Chinese to English: http://babelfish.altavista.com/ Thanks, Godfrey. I just updated my "Xitek K-Mount 50mm Lens Tests" page with Babel Fish translations. (I'd appreciate it if someone would check to see that I put the right text with the right lens in each case - thanks in advance.) The URL - http://www.cetussoft.com/pentax/xitek50/ Fred
Re: 50mm lenses test pages: help with japanese translation
On Apr 13, 2005, at 9:47 AM, Shel Belinkoff wrote: I doubt it. The M series was a major redesign from the K, and the look I get from the K50/1.4 and the M50/1.4 is different. Well, looking at bdmitrov's pages, the K, M, and A all depart somewhat in the relationship of elements' curvature and thickness. Whether it's the drawing or what, i do not know. I have heard it said repeatedly on various forums that the 50/1.4 got a redesign between the M and A series, and that the A series is a superior performer. More than that I don't know. I do know the A50/1.4 is great. :-) As far as I can recall,, there was never a K50/1.7, so your comment doesn't seem right on that point, either. Yes, the 50/1.7 seems to have been introduced at M series time according to the same pages. Godfrey
Re: 50mm lenses test pages: help with japanese translation
You're right about the M50 1.7 Shel, it was the replacement for the [K]55 1.8. I'm not sure that the M50 1.4 would be called a major redesign, (except for the mechanics that is), but all of the tooling had to be changed which along with improvements in coatings may account for some difference in results. Shel Belinkoff wrote: Hi Godfrey, I doubt it. The M series was a major redesign from the K, and the look I get from the K50/1.4 and the M50/1.4 is different. As far as I can recall,, there was never a K50/1.7, so your comment doesn't seem right on that point, either. Shel [Original Message] From: Godfrey DiGiorgi the M and K should be identical optically, the A, F and FA versions identical optically. I've never owned any other Pentax 50/1.4 so I can't compare. The f/1.7 versions are supposed to be the same, optically, from the K through the FA. I know the A and F versions render identically. -- I can understand why mankind hasn't given up war. During a war you get to drive tanks through the sides of buildings and shoot foreigners - two things that are usually frowned on during peacetime. --P.J. O'Rourke
Re: 50mm lenses test pages: help with japanese translation
I apologize for the confusion - it is indeed Chinese, and here is the translation a kind soul sent it to me off-list. Thank you, Oh Cheng Yu. Servus, Alin Oh Cheng Yu wrote: " I have read the above post in the archive as I don't subscribe. The words are in Chinese, not Japanese. Here is the translation with my comments in brackets. You may post my reply on the list. Pentax AF 50/1.4 High contrast: The optimum aperture appears to be between f/4 and f/5.6, with a large difference in resolving power between the centre and edges, at f/2.8 the difference beween the centre and edge is 30 lpm; at f/1.4 the resolving powers at the centre and edge are 88/77 lpm respectively. Low contrast: There is a larger range of optimum apertures from f/4 to f/11, there is a larger difference between centre and edge (comment: from right graph, seems to be the opposite). Conclusion: Possess high resolving power, but has unequal treatment of centre and edge. Pentax AF 50/1.7 High contrast: Highest resolving power of 122 lpm occurs at f/8, but there is a larger difference between centre and edge (comment: does not seem so from left graph); Low contrast: Optimum aperture is between f/8 and f/11 with 90 lpm. Conclusion: Unequal treatment of centre and edge. Regards, Oh Cheng Yu Singapore " Alan wrote: AC> Many sites from mainland China are slow indeed. That is AC> Simplified Chinese btw, not Japanese.
Re: 50mm lenses test pages: help with japanese translation
Hi Godfrey, I doubt it. The M series was a major redesign from the K, and the look I get from the K50/1.4 and the M50/1.4 is different. As far as I can recall,, there was never a K50/1.7, so your comment doesn't seem right on that point, either. Shel > [Original Message] > From: Godfrey DiGiorgi > the M and K should be identical optically, the A, F and FA versions > identical optically. I've never owned any other Pentax 50/1.4 so I > can't compare. > > The f/1.7 versions are supposed to be the same, optically, from the K > through the FA. I know the A and F versions render identically.
Re: 50mm lenses test pages: help with japanese translation
I have the A50/1.4, A50/1.7, A50/2 and F50/1.7. My understanding is that the A50/1.4 was a small redesign/improvement over the M50/1.4 ... the M and K should be identical optically, the A, F and FA versions identical optically. I've never owned any other Pentax 50/1.4 so I can't compare. The f/1.7 versions are supposed to be the same, optically, from the K through the FA. I know the A and F versions render identically. The A50/1.4 is a little softer at f/1.4 than the A/F50/1.7 is at f/1.7. At f/2, they all look nearly identical, but the f/1.4 has a nicer rendering of out of focus elements. At f/5.6, I can't tell any of them them apart unless there is a specular flare reflection imaging the aperture blades in the image. The f/2 lens is a very good performer, but doesn't meet the sharpness of the f/1.4 or f/1.7 models at corners/edges until f/4-5.6 in my example. Godfrey On Apr 13, 2005, at 9:07 AM, Shel Belinkoff wrote: What's the deal with the A50/1.7? My favorite 50 is the K50/1.4 - most especially for B&W use. Still looking for a better sample than the one I now have. BTW, Fred, how does the K compare to the A, IYNSHO? Shel [Original Message] From: Fred Just for simplicity (to make it easier to compare the K-mount 50's), I put the Pentax and Ricoh lens charts on a page at http://www.cetussoft.com/pentax/xitek50/ 1. My favorite 50 is the A 50/1.4. 2. The A 50/1.2 is a better lens than some people give it credit for. 3. The A 50/2 has a high "bang for the buck ratio". 4. And then there's the A 50/1.7... Fred
Re: 50mm lenses test pages: help with simplified Chinese translation
On Apr 13, 2005, at 7:49 AM, Fred wrote: Below is a link to an interesting page with test charts for all major 50mm lenses out there. Actually, I thought that Canon is conspicuous in its absence. Doesn't Canon make 50mm lenses? (I have to believe that Canon does...) Babelfish does a useful job of translating the page from simplified Chinese to English: http://babelfish.altavista.com/ Canon currently makes the EF50mm f/1.4 USM and EF 50mm f/1.8 Mark II. Both are good lenses, the f/1.4 has nicer out of focus rendering and a far better, professional quality lens mount. Comparing the EF50/1.4 to the Pentax A50/1.4 is interesting. Both are exceptionally good lenses. I tend to prefer the rendering of the Pentax lens at large lens openings, but past f/4 they are virtually impossible to tell apart. Godfrey
Re: 50mm lenses test pages: help with japanese translation
What's the deal with the A50/1.7? My favorite 50 is the K50/1.4 - most especially for B&W use. Still looking for a better sample than the one I now have. BTW, Fred, how does the K compare to the A, IYNSHO? Shel > [Original Message] > From: Fred > Just for simplicity (to make it easier to compare the K-mount 50's), I put > the Pentax and Ricoh lens charts on a page at > > http://www.cetussoft.com/pentax/xitek50/ > 1. My favorite 50 is the A 50/1.4. > > 2. The A 50/1.2 is a better lens than some people give it credit for. > > 3. The A 50/2 has a high "bang for the buck ratio". > > 4. And then there's the A 50/1.7... > > Fred >
Re: 50mm lenses test pages: help with japanese translation
> Below is a link to an interesting page with test charts for all major > 50mm lenses out there. Just for simplicity (to make it easier to compare the K-mount 50's), I put the Pentax and Ricoh lens charts on a page at http://www.cetussoft.com/pentax/xitek50/ If anyone can come up with English translations for the Chinese comments below each chart (on the original site), I'll add them, too. I think that the charts pretty much confirm my own experiences, although I'm comparing all A lenses (substituting my A models for the FA 50/1.4 and FA 50/1.7 lenses). That is to say, I ~still~ think that - 1. My favorite 50 is the A 50/1.4. 2. The A 50/1.2 is a better lens than some people give it credit for. 3. The A 50/2 has a high "bang for the buck ratio". 4. And then there's the A 50/1.7... Fred
Re: 50mm lenses test pages: help with simplified Chinese translation
On Apr 13, 2005, at 7:49 AM, Fred wrote: Below is a link to an interesting page with test charts for all major 50mm lenses out there. Actually, I thought that Canon is conspicuous in its absence. Doesn't Canon make 50mm lenses? (I have to believe that Canon does...) Babelfish does a useful job of translating the page from simplified Chinese to English: http://babelfish.altavista.com/ Canon currently makes the EF50mm f/1.4 USM and EF 50mm f/1.8 Mark II. Both are good lenses, the f/1.4 has nicer out of focus rendering and a far better, professional quality lens mount. Comparing the EF50/1.4 to the Pentax A50/1.4 is interesting. Both are exceptionally good lenses. I tend to prefer the rendering of the Pentax lens at large lens openings, but past f/4 they are virtually impossible to tell apart. Godfrey
Re: 50mm lenses test pages: help with japanese translation
> Below is a link to an interesting page with test charts for all major > 50mm lenses out there. Actually, I thought that Canon is conspicuous in its absence. Doesn't Canon make 50mm lenses? (I have to believe that Canon does...) Fred
Re: Re: 50mm lenses test pages: help with japanese translation
> JANET's a little sleepy this afternoon. 8-) Nothing new, I've got a faster connection at home these days - Pathetic! John -- Original Message --- From: <[EMAIL PROTECTED]> To: pentax-discuss@pdml.net Sent: Wed, 13 Apr 2005 14:33:36 +0000 Subject: Re: Re: 50mm lenses test pages: help with japanese translation > > > > From: "John Whittingham" <[EMAIL PROTECTED]> > > Date: 2005/04/13 Wed PM 02:13:41 GMT > > To: pentax-discuss@pdml.net > > Subject: Re: 50mm lenses test pages: help with japanese translation > > > > > Below is a link to an interesting page with test charts for all > > > major 50mm lenses out there. > > > > Very slow loading, or is it my connection? > > > > John > > > > > JANET's a little sleepy this afternoon. 8-) > > m > > - > Email sent from www.ntlworld.com > virus-checked using McAfee(R) Software > visit www.ntlworld.com/security for more information --- End of Original Message ---
Re: Re: 50mm lenses test pages: help with japanese translation
> > From: "John Whittingham" <[EMAIL PROTECTED]> > Date: 2005/04/13 Wed PM 02:13:41 GMT > To: pentax-discuss@pdml.net > Subject: Re: 50mm lenses test pages: help with japanese translation > > > Below is a link to an interesting page with test charts for all > > major 50mm lenses out there. > > Very slow loading, or is it my connection? > > John > > JANET's a little sleepy this afternoon. 8-) m - Email sent from www.ntlworld.com virus-checked using McAfee(R) Software visit www.ntlworld.com/security for more information
Re: 50mm lenses test pages: help with japanese translation
> Very slow loading for me, too... Cheers Fred... John
Re: [Bulk] Re: 50mm lenses test pages: help with japanese translation
On 4/13/05 10:04 AM, "John Whittingham" <[EMAIL PROTECTED]> wrote: >> I was wondering if one of our resident japanese list members might >> help me understand the significance of the left chart versus the >> right one. Is the left one for high (1:1000) contrast level and the >> other one for reduced (1:1.6) ? > > > It looks similar to the charts published by Amateur Photographer, high and > low contrast. The correlation between those I've seen is very good IIRC. Unfortunately, this is in Chinese, not in Japanese. Perhaps some Chinese speaking folks can help but most Japanese can make some sense out of certain Chinese characters. All I can tell is that this is obviously comparing the centre/edge resolution under high/low contrast (obviously left being high contrast). There is also indeed a reference to Amateur Photographer in page 1. Beyond that, I do not wish to cast any more possibly misleading info. Cheers, Ken
Re: 50mm lenses test pages: help with japanese translation
--- John Whittingham <[EMAIL PROTECTED]> wrote: > > Below is a link to an interesting page with test charts for all > > major 50mm lenses out there. > > Very slow loading, or is it my connection? Many sites from mainland China are slow indeed. That is Simplified Chinese btw, not Japanese. Alan Chan http://www.pbase.com/wlachan __ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/
Re: 50mm lenses test pages: help with japanese translation
> Very slow loading, or is it my connection? Very slow loading for me, too... Fred
Re: 50mm lenses test pages: help with japanese translation
> Below is a link to an interesting page with test charts for all > major 50mm lenses out there. Very slow loading, or is it my connection? John
Re: 50mm lenses test pages: help with japanese translation
> I was wondering if one of our resident japanese list members might > help me understand the significance of the left chart versus the > right one. Is the left one for high (1:1000) contrast level and the > other one for reduced (1:1.6) ? It looks similar to the charts published by Amateur Photographer, high and low contrast. The correlation between those I've seen is very good IIRC. John
50mm lenses test pages: help with japanese translation
Below is a link to an interesting page with test charts for all major 50mm lenses out there. I was wondering if one of our resident japanese list members might help me understand the significance of the left chart versus the right one. Is the left one for high (1:1000) contrast level and the other one for reduced (1:1.6) ? If so, then this pretty much matches my experience with FA 50/1.4. Thanks. http://article.xitek.com/showarticle.php?page=7&id=1251 Servus, Alin
Re: 50mm lenses. ....Re: LX vs K2dmd vs Super Program (update)
Fred, for me there is more goinging on between the diffent 50's than resolution alone. For me (and this is just an opinion here) resolution is just an indication of whether a lens is gonnna be a poor performer or not. I.e. Just something to check isnt too bad. But the real qualities of a lens, i.e. The ones that are going to affect the image most are colour and image rendition. Like penis size, resolution can be completely misleading as to real world performance. Antonio. On 11/8/04 4:55 am, "Fred" <[EMAIL PROTECTED]> wrote: > > I did some (limited, of course) testing of a number of samples a few > years back: > > http://www.cetussoft.com/pentax/resolutn.htm > > Fred
Re: 50mm lenses. ....Re: LX vs K2dmd vs Super Program (update)
I agree Rob. I dont own the 1.2 but have found that A50/1.4 and A50/1.7 are very different lenses in terms of image renditio as well as sharpness. A50/1.7 is a fine, very sharp lens at most apetures but seems to lack the 3-D quality of the A50/1.4. For me it is almost as if the A50/1.7 is TOO sharp for most uses. I dont know , the images just seem a bit flatter with the 1.7. Sharp but flat. Wheras the 1.4 produces very nicely rendered and deep images (if that is possible). Would love to see some pictures taken with A50/1.2 to compare. A. On 11/8/04 2:26 am, "Rob Studdert" <[EMAIL PROTECTED]> wrote: > > I tested my Screw 55/1.8, A50/1.7, A50/1.4 and A50/1.2 lenses then other day > and I my assessment is similar to most peoples WRT sharpness. However that > factor is far outweighed in my opinion by the variation in rendition due to > the > differences in the lenses characteristics. I found even at mid-range apertures > each of the lenses have their own image characteristics which are most visible > at the edges of the frame. Each is good for particular uses, I find it so > strange that people seem to dismiss the A50/1.2 on the basis that it's not as > "good" wide open as a A50/2 or A50/1.7. Sure it's different but still highly > usable as photographic tool. > > I will try to get some sample images up to show what I mean next week.
Re: 50mm lenses. ....Re: LX vs K2dmd vs Super Program (update)
> I don't have many samples of each, but I have almost a dozen 50mm > lenses in various places around the house, so I have been able to > test (as much as I test anything) more than one sample of most > emulations. I did some (limited, of course) testing of a number of samples a few years back: http://www.cetussoft.com/pentax/resolutn.htm Fred
Re: 50mm lenses. ....Re: LX vs K2dmd vs Super Program (update)
On 10 Aug 2004 at 18:00, William Robb wrote: > The A 50mm f/1.2 is pretty soft wide open (though much better than > the Nikkor 50mm f/1.2 that I replaced with the Pentax lens), and is > only ok until about f/8, at which point it is very good indeed. I tested my Screw 55/1.8, A50/1.7, A50/1.4 and A50/1.2 lenses then other day and I my assessment is similar to most peoples WRT sharpness. However that factor is far outweighed in my opinion by the variation in rendition due to the differences in the lenses characteristics. I found even at mid-range apertures each of the lenses have their own image characteristics which are most visible at the edges of the frame. Each is good for particular uses, I find it so strange that people seem to dismiss the A50/1.2 on the basis that it's not as "good" wide open as a A50/2 or A50/1.7. Sure it's different but still highly usable as photographic tool. I will try to get some sample images up to show what I mean next week. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
50mm lenses. ....Re: LX vs K2dmd vs Super Program (update)
- Original Message - From: <[EMAIL PROTECTED]> Subject: Re: LX vs K2dmd vs Super Program (update) > Well, when I actually TESTED my 50s I found that the M 50/2 is a really > good performer, plus it's cheap and very small. None of the above can > be said for A 50/1.2 from what I've heard (I sold mine a while back, > before I had a chance to test it.) The A 50mm f/1.2 is pretty soft wide open (though much better than the Nikkor 50mm f/1.2 that I replaced with the Pentax lens), and is only ok until about f/8, at which point it is very good indeed. > > So, while you might pick up a faster Pentax 50 which is a LITTLE better > (I'd suggest A/1.4 or A/1.7--at least the M50/1.4 is an older design and > reputedly not as good) I don't think you'll be disappointed by the A 50/2 > (assuming it is the same as M50/2) and I'd recommend putting money towards > a better telephoto or wider wide if you find the need for that. All the Pentax 50mm lenses in the f/1.4 to f/2 range are good lenses (perhaps the K55mm f/1.8 is the exception, it isn't all that wonderful until well stopped down). Of all the ones I have, I think the K 50mm f/1.4 is the "sharpest", the M 50mm f/1.4 is the "creamiest" (for lack of a better term), the FA 50mm f/1.4 seems most excellent, but I haven't shot a lot with it yet, and the 1.7s and f/2s in whatever series all seem very good as well. I don't have many samples of each, but I have almost a dozen 50mm lenses in various places around the house, so I have been able to test (as much as I test anything) more than one sample of most emulations. William Robb
Re: Vs: 3 50mm lenses
This one time, at band camp, "Raimo Korhonen" <[EMAIL PROTECTED]> wrote: > Small differences. The El Cheapo 2/50 fares quite well. What aperture(s) did you use? All images are shot at f4 with a shutter speed of 1/750 Kind regards Kevin -- __ (_ \ _) ) | / / _ ) / _ | / ___) / _ ) | | ( (/ / ( ( | |( (___ ( (/ / |_| \) \_||_| \) \) Kevin Waterson Port Macquarie, Australia
Vs: 3 50mm lenses
Small differences. The El Cheapo 2/50 fares quite well. What aperture(s) did you use? Season´s greetings! Raimo Personal photography homepage at http://www.uusikaupunki.fi/~raikorho -Alkuperäinen viesti- Lähettäjä: Kevin Waterson <[EMAIL PROTECTED]> Vastaanottaja: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Päivä: 25. joulukuuta 2003 6:19 Aihe: 3 50mm lenses >Here are 3 images taken with the *istD at f4/750 >All images use a polarisor, and my daughter grudgingly >dragged herself from her new toys to stand in. > >1) SMC Pentax FA 50mm 1:1.4-22 >http://www.wildcherry.com.au/lens/FA50mm.jpg > >2) SMC Pentax-A 1:2 50mm >http://www.wildcherry.com.au/lens/A50mm.jpg > >3) SMC Pentax-M 1:1.7 50mm >http://www.wildcherry.com.au/lens/M50mm.jpg > >Kind regards >Kevin > >-- > __ >(_ \ > _) ) >| / / _ ) / _ | / ___) / _ ) >| | ( (/ / ( ( | |( (___ ( (/ / >|_| \) \_||_| \) \) >Kevin Waterson >Port Macquarie, Australia >
Re: AW: 3 50mm lenses
This one time, at band camp, "keller.schaefer" <[EMAIL PROTECTED]> wrote: > So, 1.7/50 is the best - or could the FA be even better focussed manually? When you say 'best', what criteria are you using? I too wondered at the auto focus capabilities of the FA lens. Kind regards Kevin -- __ (_ \ _) ) | / / _ ) / _ | / ___) / _ ) | | ( (/ / ( ( | |( (___ ( (/ / |_| \) \_||_| \) \) Kevin Waterson Port Macquarie, Australia
AW: 3 50mm lenses
So, 1.7/50 is the best - or could the FA be even better focussed manually? Sven -Ursprungliche Nachricht- Von: Kevin Waterson [mailto:[EMAIL PROTECTED] Gesendet: Donnerstag, 25. Dezember 2003 05:25 An: [EMAIL PROTECTED] Betreff: 3 50mm lenses Here are 3 images taken with the *istD at f4/750 All images use a polarisor, and my daughter grudgingly dragged herself from her new toys to stand in. 1) SMC Pentax FA 50mm 1:1.4-22 http://www.wildcherry.com.au/lens/FA50mm.jpg 2) SMC Pentax-A 1:2 50mm http://www.wildcherry.com.au/lens/A50mm.jpg 3) SMC Pentax-M 1:1.7 50mm http://www.wildcherry.com.au/lens/M50mm.jpg Kind regards Kevin -- __ (_ \ _) ) | / / _ ) / _ | / ___) / _ ) | | ( (/ / ( ( | |( (___ ( (/ / |_| \) \_||_| \) \) Kevin Waterson Port Macquarie, Australia
Re: 50mm Lenses
>> The 1.4 performs way better at f/1.4 than the f/1.7 does. :-) :-) >> :-) > Not the 2 A50/1.4 that I had. The A50/1.7 was noticably sharper at > wide open. The 50/1.4 wasn't sharp until f4, similar to the > FA*84/1.4. My experience with some A 50/1.4's and A 50/1.7's differs. I found the A 50/1.4's to be slightly sharper at f/1.4 than the A 50/1.7's at f/1.7, and the advantage would continue at f/2, f/2.8, etc., until at about f/8 they would essentially be the same. Yes, I do know that resolution is not everything, but - http://www.cetussoft.com/pentax/resolutn.htm By the way, I also found that the A 50/2 seemed to be as sharp as the A 50/1.7 aperture-for-aperture (except at f/1.7, of course - ). About the only advantage I have ever seen for the 50/1.7 over the 50/1.4 was in field flatness (which seemed significant for macro shooting with the Vivitar 2X macro-focusing TC). I no longer have any 50/1.7's. When I want a 50, it's usually an A 50/1.4 that gets pressed into service. I can use the A 50/1.2 when I know (or suspect) I'll be facing really low-light conditions, and I also still have a couple of A 50/2's - they're not really worth trying to sell, and the ~A~ 50/2 is a surprisingly good lens, and it is useful to leave "kicking around" in the "workhorse lens kit bag" (it's sort of my "purgatory" for lenses - ) in the trunk of the car... Fred
Re: 50mm Lenses
I wrote: The 1.4 performs way better at f/1.4 than the f/1.7 does. :-) :-) :-) Alan Chan wrote: Not the 2 A50/1.4 that I had. The A50/1.7 was noticably sharper at wide open. The 50/1.4 wasn't sharp until f4, similar to the FA*84/1.4. But the 50 f/1.4 still performs better at f/1.4, because the f/1.7 doesn't have f/1.4... :-) Best wishes Roland _ Coola downloads från adidas! http://www.msn.se/mobil/adidas
Re: 50mm Lenses
On 29 May 2003 at 16:47, Mike Ignatiev wrote: > you may also want to try a (cheap) rangefinder. the lack of mirror and bright > viewfinder may buy you a couple of stops -- more than you'll ever get from slr, > no matter how much money you throw into it. And you'll probably also have more lost shots and failed compositions due to parallax error and un-expected flare. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: 50mm Lenses
On 30 May 2003 at 1:10, Anthony Farr wrote: > The A50/1.7 has a common fault with its aperture ring that involves the "A" > button. The button sits in a strip of spring steel that is anchored at each end > to the plastic of the aperture ring (by small rivets IIRC). One of the rivets > sometimes fails causing the steel strip to stand proud at that end, which snags > a recessed area of the ring's inner surface and prevents movement to apertures > below f9.5 (again IIRC). It happened twice to my A50/1.7 I have also had this problem occur except in one of my cases the spring became completely disconnected, rotated then fouled the entire aperture ring mechanism. The "rivet" is actually a small thermoplastic projection which is simply melted and squashed in order to hold the metal spring, hardly adequate given how readily they fail. I repaired one with epoxy and another with a small screw, neither have failed again. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
Re: 50mm Lenses
Thanks everyone, I think I'll wait and get the 1.4. It's not so much of a focusing issue for me, it's being able to get a decent shot off in a dark room without a tripod, so the 2.8 is out. Candid shots, remember? In the meantime, I'll stick with my f/2. --Daniel Liu "The toothbrush is an indispensable part of enjoying life. I brush my teeth every day. I have a wonderful time. I like my toothbrush. I was wont to get up early."
Re: 50mm Lenses
If you fix this problem, I favor a very, very small dot of JB weld (epoxy) as I always have it around for many other purposes. It too requires that the lens remain unassembled for a few days as with all glues and epoxies, but after 24 hrs there is less out gassing and it will NEVER fail. In addition to being useful to bind things together, this stuff can be used to form parts and can be filed, sanded, milled, drilled and polished. I've used it to bed the receivers of two of my rifles. Still, I agree with Anthony. The A50/1.4 is an excellent lens with better construction. Regards, Bob... --- "Beer is proof that God loves us and wants us to be happy" - Benjamin Franklin From: "Anthony Farr" <[EMAIL PROTECTED]> > The A50/1.7 has a common fault with its aperture ring that involves the "A" > button. The button sits in a strip of spring steel that is anchored at each > end to the plastic of the aperture ring (by small rivets IIRC). One of the > rivets sometimes fails causing the steel strip to stand proud at that end, > which snags a recessed area of the ring's inner surface and prevents > movement to apertures below f9.5 (again IIRC). It happened twice to my > A50/1.7, the first time it was sent out to repair, the second repair would > have taken cumulative maintenance costs higher than the lens's original > value so I decided to do a home repair. If that failed I would have binned > it. The repair was actually very simple but you have to be careful of the > infamous "projectile balls" inside the lens mount. If as in my case super > glue is part of the process then you need to leave the whole lot open for a > few days so you don't get a filmy deposit on the glass. > > This is a powerful argument in favour of the A50/1.4, i.e. all metal > construction. > > From: "Joe Wilensky" <[EMAIL PROTECTED]> > > > I believe there's a build quality issue with the SMC-A 50/1.7 that > > doesn't exist even with the similar A 50/2 -- I probably read about > > it here, and it happened with the A 50/1.7 I owned for a while. The > > f-stop ring detents deteriorate in some way, I don't remember if it's > > because of a gear or some plastic part. But mine worsened noticeably > > while I had it; the aperture ring developing a stiff and uneven feel. > > This issue doesn't exist with the M 50/1.7, and it doesn't exist with > > the A 50/2 or the A 50/1.4. That build quality issue alone may be > > reason enough to select a different lens, despite the A 50/1.7's fine > > optical qualities.
Re: 50mm Lenses
I believe there's a build quality issue with the SMC-A 50/1.7 that doesn't exist even with the similar A 50/2 -- I probably read about it here, and it happened with the A 50/1.7 I owned for a while. The f-stop ring detents deteriorate in some way, I don't remember if it's because of a gear or some plastic part. But mine worsened noticeably while I had it; the aperture ring developing a stiff and uneven feel. This issue doesn't exist with the M 50/1.7, and it doesn't exist with the A 50/2 or the A 50/1.4. That build quality issue alone may be reason enough to select a different lens, despite the A 50/1.7's fine optical qualities. Joe From: "Alan Chan" <[EMAIL PROTECTED]> Date: Thu, 29 May 2003 02:34:07 -0700 I don't think it's going to make a lot of difference. Besides, the 1.4 doesn't perform well at wide open. You might find yourself with more useful shots with the 1.7. But the 1.4 is a brighter lens, so it's easier to focus and compose in dim lit conditions - and it's nice to have f/1.4 even if the performance wide opened isn't as good as stopped down, but then... this is normal with all lenses. :-) The 1.4 performs way better at f/1.4 than the f/1.7 does. :-) :-) :-) Best wishes Roland _ Hitta rätt köpare på MSN Köp & Sälj http://www.msn.se/koposalj
Re: 50mm Lenses
you may also want to try a (cheap) rangefinder. the lack of mirror and bright viewfinder may buy you a couple of stops -- more than you'll ever get from slr, no matter how much money you throw into it. best, mishka
Re: 50mm Lenses - or 50/2.8 macro then?
I ran around for a while with an A50/2.8 macro on my Super Program as the normal lens. It's OK, but I missed the f1.4 or f1.7 of my other 50's. After a while, the viewfinder is notably dimmer and those extra stops are missed. Differences in sharpness were not apparent in every day subjects. Regards, Bob S. [EMAIL PROTECTED] writes: > > You should save moeny and get the 1.4. > > I have the A 50 f/2, and the FA 50 f/1.7 - and the aperture difference is > > hardly noticeable. > > > And what about FA 50/2.8 Macro then? Is it the sharpest of all 50's? It has > "floating elements", so it should perform well in infinity too. f2.8 was > standard for 50mm lenses many years ago.
Re: 50mm Lenses - or 50/2.8 macro then?
on 29.05.03 9:35, Roland Mabo at [EMAIL PROTECTED] wrote: > You should save moeny and get the 1.4. > I have the A 50 f/2, and the FA 50 f/1.7 - and the aperture difference is > hardly noticeable. > And what about FA 50/2.8 Macro then? Is it the sharpest of all 50's? It has "floating elements", so it should perform well in infinity too. f2.8 was standard for 50mm lenses many years ago. -- Best Regards Sylwek
Re: 50mm Lenses
From: "Alan Chan" <[EMAIL PROTECTED]> Date: Thu, 29 May 2003 02:34:07 -0700 I don't think it's going to make a lot of difference. Besides, the 1.4 doesn't perform well at wide open. You might find yourself with more useful shots with the 1.7. But the 1.4 is a brighter lens, so it's easier to focus and compose in dim lit conditions - and it's nice to have f/1.4 even if the performance wide opened isn't as good as stopped down, but then... this is normal with all lenses. :-) The 1.4 performs way better at f/1.4 than the f/1.7 does. :-) :-) :-) Best wishes Roland _ Hitta rätt köpare på MSN Köp & Sälj http://www.msn.se/koposalj
Re: 50mm Lenses
I don't think it's going to make a lot of difference. Besides, the 1.4 doesn't perform well at wide open. You might find yourself with more useful shots with the 1.7. regards, Alan Chan Or if any one has an A 1.4 lens they'd like to sell/tradethough i'm afraid my budget is very, very limited. _ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail
Re: 50mm Lenses
From: Daniel Liu <[EMAIL PROTECTED]> Date: Wed, 28 May 2003 17:09:56 -0700 Hmm, a little off topic here, but anyway: I have a great SMC-A 50mm f/2 lens now, but i find that i do an awful lot of low light interior candid shots. I have a chance to get the A 50mm f/1.7 for $25, but that's not much of an improvement. Or is it? Or should i save some money and get the 1.4? You should save moeny and get the 1.4. I have the A 50 f/2, and the FA 50 f/1.7 - and the aperture difference is hardly noticeable. Best wishes Roland _ Hitta rätt köpare på MSN Köp & Sälj http://www.msn.se/koposalj
