AC the same when the lenses are extended to closest focus. But geez, I must be
AC stupid to think that way, I know.
Oh, Alan, don't get so worked up ;-)
Isn't this all just fun? Personally, I have more lively issues than
determining if the Nikon and Tamron lenses are the same or not, or how
much
I just got a little touchy lately... :-)
Alan Chan
http://www.pbase.com/wlachan
Oh, Alan, don't get so worked up ;-)
Isn't this all just fun? Personally, I have more lively issues than
determining if the Nikon and Tamron lenses are the same or not, or how
much do they differ, practically or
Thursday, July 1, 2004, 2:01:33 PM, Alan wrote:
AC I just got a little touchy lately... :-)
Sorry for that :) I meant no harm.
Best regards,
Frantisek Vlcek
I checked their optical diagrams and they look identical. Interestingly, the
AF Nikkor 105/2.8 macro also has the same optical diagram as the Pentax
F/FA100/2.8 macro.
Alan Chan
http://www.pbase.com/wlachan
That 14/2.8 Nikkor is actually a rebadged Tamron.
Hmmm. Based on the specs it COULD
Wednesday, June 30, 2004, 9:06:39 AM, Alan wrote:
AC I checked their optical diagrams and they look identical. Interestingly, the
AC AF Nikkor 105/2.8 macro also has the same optical diagram as the Pentax
AC F/FA100/2.8 macro.
You can't tell from the diagrams. They are very simplified, do not
[EMAIL PROTECTED] wrote:
From: Mark Roberts [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
I've got a $500 used Sigma 14/3.5 because I couldn't scrape together $1300
for a new Nikkor 14/2.8.
That 14/2.8 Nikkor is actually a rebadged Tamron.
Hmmm. Based on the specs it COULD be
Actually,
]
Subject: Re: First smc-DA14/2.8 impressions
[EMAIL PROTECTED] wrote:
From: Mark Roberts [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
I've got a $500 used Sigma 14/3.5 because I couldn't scrape together
$1300
for a new Nikkor 14/2.8.
That 14/2.8 Nikkor is actually a rebadged Tamron.
Hmmm
You can't tell from the diagrams. They are very simplified, do not
show precise curvature, do not show the type of glasses used, do not
show exact spacing...
They might fine tune them differently, but when the diagrams look identical,
I'd say they are copying each other. Besides, the CAPA 2003
By comparing the diagrams of similar optics from different manufacturers, it
is not difficult to see that they are very different (even those popular
50mm). I would be very surprised when 2 designers came up with the the exact
same lens arrangement (both diagrams are identical in this case)
Also, I would like tp point out the AF Nikkor 105/2.8 was released roughly 2
years later than the FA100/2.8, which itself is a copy of F100/2.8
optically. If Nikon did come up with its own design which looks so similar
to the Pentax. they must deal with the patent first.
Alan Chan
Fra: John Mustarde [EMAIL PROTECTED]
I sure won't be ponying up my hard-earned bucks for any expensive new
lens with this nice CA feature. As far as I'm concerned, the DA 14
is crapola just because of the color fringing. I thought the purpose
of making a digital-specific lens would be to
On Tue, 29 Jun 2004, Jens Bladt wrote:
That's right. Works great for my SONY. I hardly ever think of the missing
viewfinder anymore. It works great - and even enlarges the image center for
manual focusing.
One of my favorite things about switching from the Sony DSC-F717 to my
*ist D is that I
://hjem.get2net.dk/bladt
-Oprindelig meddelelse-
Fra: alex wetmore [mailto:[EMAIL PROTECTED]
Sendt: 29. juni 2004 17:05
Til: [EMAIL PROTECTED]
Emne: RE: First smc-DA14/2.8 impressions
On Tue, 29 Jun 2004, Jens Bladt wrote:
That's right. Works great for my SONY. I hardly ever think
On Jun 27, 2004, at 9:13 PM, Dr. Heiko Hamann wrote:
- It has a smaller image circle than a 35mm lens (as expected) but I'm
quite sure that the imgae circle ist wide enough for a larger CCD
(maybe
crop factor 1.3).
I'd love to see a full frame photo from this lens on film, just to see
what it
on 28.06.04 4:23, Alan Chan at [EMAIL PROTECTED] wrote:
Say these are correct. How do Canon Nikon deal with it? Do they have more
effective solution?
I wouldn't say so. Nikkor AF-S 17-35/2.8 and DX 18-70/3.5-4.5 exhibits more
or less similar problems with CAs, first being high-end FF glass,
The new Quick-Shift Focus System works really good
What is this, please?
Jens Bladt
mailto:[EMAIL PROTECTED]
http://hjem.get2net.dk/bladt
-Oprindelig meddelelse-
Fra: Dr. Heiko Hamann [mailto:[EMAIL PROTECTED]
Sendt: 27. juni 2004 11:13
Til: [EMAIL PROTECTED]
Emne: First smc-DA14/2.8
: [EMAIL PROTECTED]
Emne: Re: First smc-DA14/2.8 impressions
Here's a question since not everyone has PS CS or other programs: Why can't
these lenses be made so there's no or minimal CA? Seems to me that all the
digi folks have gotta put up with this crap, and the solution offered is to
go buy
on 28.06.04 9:01, Jens Bladt at [EMAIL PROTECTED] wrote:
The new Quick-Shift Focus System works really good
What is this, please?
You can manually override AF any time (when it is not working) without
having to switch to MF on body.
--
Best Regards
Sylwek
on 28.06.04 9:05, Jens Bladt at [EMAIL PROTECTED] wrote:
This is just too much CA, I think. It seems to be disrurbing allready for
4x6 prints?? That would not be acceptable IMO.
I don't think it will show up on 4x6 prints. But it could be visible on
15x21cm and larger prints. I've seen many
That Guy wrote:
Ok Heiko, thanks. Perhaps I overestimated the capability of ED elements.
The following helped put things in perspective for me though:
...
The price for the above mentioned lens at Adorama?? $1,799.95... Yes, it's
Canon L glass, yes it's 14mm and it also has problems with CA.
on 28.06.04 10:43, Dr. Heiko Hamann at [EMAIL PROTECTED] wrote:
That's it. The 16-45 must work different (I never tried it): you have to
use the AF first and can use the quick-shift afterwards. On the DA14
quick-shift is available, always.
QSF on 16-45 works exactly in the same way as on DA
Thanks a lot. Quite clever!
Regards
Jens (NOT Sylvester)
Jens Bladt
mailto:[EMAIL PROTECTED]
http://hjem.get2net.dk/bladt
-Oprindelig meddelelse-
Fra: Dr. Heiko Hamann [mailto:[EMAIL PROTECTED]
Sendt: 28. juni 2004 10:43
Til: [EMAIL PROTECTED]
Emne: Re: First smc-DA14/2.8 impressions
Picture Window Pro software has a built in thingie that
reduces chromatic aberration.
It's not automatic; you have to play with settings, but I've seen
before/after comparisons and it seems to work well.
Joseph Tainter wrote:
Is this color fringing something we will just have to live with?
To: [EMAIL PROTECTED]
Subject: Re: First smc-DA14/2.8 impressions
- Original Message -
From: John Mustarde
Subject: Re: First smc-DA14/2.8 impressions
Double Feh!
I sure won't be ponying up my hard-earned bucks for any expensive
new
lens with this nice CA feature. As far as I'm
PROTECTED]
Sendt: 29. juni 2004 06:22
Til: [EMAIL PROTECTED]
Emne: RE: First smc-DA14/2.8 impressions
The viewfinder could be replaced by a tiny LCD viewfinder... Might not be
the greatest thing to manual focus with but it would be better than using it
like range-finder IMO.
-That Guy
Hi,
yesterday my smc-DA 14/2.8 arrived. Here are some short impressions.
Maybe I'll find some time to upload some images, later.
- Very good built quality, no plastics, pure metal!
- It has a smaller image circle than a 35mm lens (as expected) but I'm
quite sure that the imgae circle ist wide
- It is wide open (2.8) sharper than the 16-45 wide open (4.0); You
have to stop down the 16-45 to 4.5 in order to get the same result.
This is very good news since I use my primes in low light.
- The 16-45 is told to underexpose one stop.
Really? Who claims this? I haven't noticed such a
I do see some CA in the corners,
Is this color fringing something we will just have to live with?
Last week, between transit disasters, I took some pix of the Jefferson
Memorial with the *ist D and DA 16-45 f4. One shot was from a distance,
across the Tidal Basin. At the juncture between the
]
Sent: Sunday, June 27, 2004 5:29 PM
Subject: Re: First smc-DA14/2.8 impressions
I do see some CA in the corners,
Is this color fringing something we will just have to live with?
Last week, between transit disasters, I took some pix of the Jefferson
Memorial with the *ist D and DA 16-45 f4
On 27 Jun 2004 at 20:47, DagT wrote:
http://www.photo.net/photodb/folder.tcl?folder_id=408620
Se the picture of the tree and the cropped picture showing the upper
left part of the tree picture.
This looks more like sensor vs angle of incidence problems than projected CA as
the areas which
lenses pretty well dispensed with that years ago. Feh!
Shel
[Original Message]
From: Herb Chong [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Date: 6/27/2004 3:06:11 PM
Subject: Re: First smc-DA14/2.8 impressions
have you tried a tool to remove the chromatic abberation. there is one
On 27 Jun 2004 at 16:09, Shel Belinkoff wrote:
Here's a question since not everyone has PS CS or other programs: Why can't
these lenses be made so there's no or minimal CA? Seems to me that all the digi
folks have gotta put up with this crap, and the solution offered is to go buy a
$600.00
On 28 Jun 2004 at 9:22, Rob Studdert wrote:
Sorry I'll try that paragraph again:
Most all wide angle lenses exhibit some CA, the problems exhibited when using
them with digicams is a little more complex as sensors have two primary
characteristics that are very different from film.
Firstly
]
Subject: Re: First smc-DA14/2.8 impressions
Here's a question since not everyone has PS CS or other programs: Why can't
these lenses be made so there's no or minimal CA? Seems to me that all the
digi folks have gotta put up with this crap, and the solution offered is to
go buy a $600.00 program
Any DA14 users care to test it on film and see how serious the CA actually
is? Or was it the CCD?
Alan Chan
http://www.pbase.com/wlachan
_
MSN Premium with Virus Guard and Firewall* from McAfee® Security : 2 months
FREE*
DA14 does have ED.
Alan Chan
http://www.pbase.com/wlachan
They could have gotten rid of it, if they had used ED elements. It's that
simple, typically lenses with that type of glass cost a bit more though.
_
MSN Premium helps
Say these are correct. How do Canon Nikon deal with it? Do they have more
effective solution?
Alan Chan
http://www.pbase.com/wlachan
Mast all wide angle lenses exhibit some CA, the problem with digicams is a
little more complex, sensors have two characteristics that are very
different
from
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