Re: Best portrait lens for Pentax DSLR?

2002-03-03 Thread Frantisek Vlcek

dob> Or: "We had the first SLR.  The first AF lens.  Now the first affordable
dob> DLSR which will use all your lenses you bought for our other cameras."

First SLR? That's untrue, unfortunately. First *japanese* SLR,
yes. First SLR, by no means! That was the german made Exakta, IIRC, the Exakta
Kine-Relfex, perhaps? I am not into Exakta collecting, so I really
don't know the exact model. And even long before Pentax. There were
other early SLRs from Contax, Pentacon,... Pentax is after all most
probably PENTaprism conAX, like Pentacon = PENTAprism CONtax.

Good light,
   Frantisek Vlcek
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Re: Best portrait lens for Pentax DSLR?

2002-03-03 Thread Cotty

>to interpret, the other comments have been made many times by many
>people, all, of course, more knowledgeable than I.  You seem to have a
>good handle on this digital business - do you think that high-quality
>lenses are wasted on digital cameras at this point in their development?

Without a doubt!

There may well come a time, certainly within the life of our lenses, when 
the tables will have turned and the detail, shadow or otherwise, will be 
recorded by the chip - depending on lens of course. Using this as a 
given, then my primary concern regarding the DSLR would change to the 
speed of the lens. Fast lenses are important to me because I usually use 
natural light, say one window allowing light into a room, placing the 
subject in relation to that, with lots of shadow.

OTOH one does like to know that one is using the best possible quality 
that ine can afford.

Food for though, thanks Shel.


Cotty

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Re: Best portrait lens for Pentax DSLR?

2002-03-01 Thread JTodd19261

The 8 vs. 12-bit thread is a viable one, but not the only when considering a 
3 MP Pentax SLR.  When trying to optimize the 'best' portrait lens, don't 
assume that the 50mm f/1.4 becomes a 75/1.4.  Just like in a standard 4x5 
lens (150mm f/5.6) the larger film area has a wider aperature but with the 
same end result or look.  Think of the Olymp.. 3040 with a 35-105 f/1.8 lens. 
 Wouldn't a 105/1.8 be worth more than the camera?

Jay 
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Re: Best portrait lens for Pentax DSLR?

2002-03-01 Thread Bruce Rubenstein

The lens resolution is probably not wasted on 6 mp sensors. People are making
16"x20" prints from them (and think they are very good), and this an enlargment
size that is pushing it for 35mm. Mechanical quality is always a value. Now,
digital does have a weak spot: dynamic range. Most, if not all, of the fixed
lens digital cameras only work with 8 bits per color, per pixel, and the DSLRs
go to 12. It's like working with narrow latitude slide film. You have to make
sure highlight detail isn't lost, so the shadows will tend to block up unless
lighting is controlled. A lens that is good on shadow detail (I have no idea
how they make a lens to do this) won't be of much use.

Another thing to keep in mind is that "direct to digital/digital capture" is
only advantagous if the image is going to be digitized at some point. If the
end product is going to be a wet chemistry print, there's no point in entering
the digital domain. 


--- Shel Belinkoff <[EMAIL PROTECTED]> wrote:
> 
> Apart from the comment about shadow detail, which I'm not quite sure how
> to interpret, the other comments have been made many times by many
> people, all, of course, more knowledgeable than I.  You seem to have a
> good handle on this digital business - do you think that high-quality
> lenses are wasted on digital cameras at this point in their development?
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A little OT but Re: Best portrait lens for Pentax DSLR?

2002-03-01 Thread David Spaulding

I would love to see a DSLR that is still capable of using all Pentax lenses.
It's one of the best reasons to have a Pentax - so many lenses to choose
from!

I would have to go with the 77mm for the best lens - it would work great
with a full 35mm size chip or smaller.


-- 
David Spaulding
Photographer
http://d.spaulding.tripod.com 
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RE: Best portrait lens for Pentax DSLR?

2002-03-01 Thread dave o'brien

On Fri, 1 Mar 2002, Ed Mathews wrote:

> The problem with this is that there is no set standard of a multiplier
> that will be agreed upon and standard for any length of time.  If there
> ever is a Pentax digital SLR, it might require a 1.5 X focal length, but
> it might not.  And there's no telling what the next one after that would
> require.  This is all temporary right now.

It really doesn't matter.  If Pentax get out an affordable DSLR with the 
promise of better coverage and higher resolution in later versions it'll 
still be a coup.  Kodak and Nikon offerings are high-end.  If Pentax can 
target the mid-range SLR buyer with affordable second hand lenses for a 
DSLR, they could be onto a winner.

Think of an advertising campaign: "Remember the Spotmatic camera you
bought when you were in Vietnam?  You know those lenses you've had for
thirty years?  They'll fit your *new* Pentax Digital."

Or: "We had the first SLR.  The first AF lens.  Now the first affordable 
DLSR which will use all your lenses you bought for our other cameras."

dave
-- 
dave o'brien - http://www.diaspoir.net
Each man is his own prisoner, in solitary confinement for life.
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Re: Best portrait lens for Pentax DSLR?

2002-03-01 Thread Ryan K. Brooks

I posted this last week:

http://www.hack.net/dslr.html

The 31 limited becomes a 50mm at 1.6x
The 50 becomes 80 at 1.6x

(I'm thinking 1.6x, since the price is $1200).

Of course, now I'm paranoid that they'll "orphan" this camera just as fast
as the switch from the Optio 330->430.  (Although I do enjoy the low light
capabilities of the 330).

-R

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From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, March 01, 2002 6:39 AM
Subject: Re: Best portrait lens for Pentax DSLR?


> Cotty,
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Re: Best portrait lens for Pentax DSLR?

2002-03-01 Thread dave o'brien

On Fri, 1 Mar 2002, Shel Belinkoff wrote:

> There is the SMC Pentax A 35~70/4.0 which can be purchased pretty
> reasonably. 
> 
> What does "cracking good" mean?  What characteristics do you look for in
> a portrait lens?

It means "really rather good, don't you know".

As for good portrait lenses, I'm personally rather partial to a 20-35 as a 
lens for getting a pic of people doing things.   I doubt any non-full 
frame DSLR will satisfy me for that kind of portrait unless I go back and 
pay that extortionate amount for the 15/3.5.

If Pentax get a reasonable budget DSLR going, they'll have done something 
no one else has.  If anyone complains about it, ask to see any other DLSR 
to which you can attach either a 15/3.5 or an 800/4.0 or anything in 
between.

dave
--
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http://www.diaspoir.net
The more crap you put up with, the more crap you are going to get.
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Re: Best portrait lens for Pentax DSLR?

2002-03-01 Thread Pål Audun Jensen

Bob wrote:


>I think Pal was trying to hint to us some time ago that the Limited lens
>series had some digital implications.


No. That wasn't me.
I don't think the Limited lenses has anything to do with digital per se.

Pål
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Re: Best portrait lens for Pentax DSLR?

2002-03-01 Thread Shel Belinkoff

There is the SMC Pentax A 35~70/4.0 which can be purchased pretty
reasonably. 

What does "cracking good" mean?  What characteristics do you look for in
a portrait lens?

Cotty wrote:
> 
> assuming a nominal multiplier of 1.5X
> normal film-frame focal length, what 
> existing Pentax lens would become
> the ideal portrait lens?
> 
> My thoughts: a 50mm 1.2 or 1.4 would 
> give effectively ~75mm and both are
> cracking good lenses, no? 

-- 
Shel Belinkoff
mailto:[EMAIL PROTECTED]
http://home.earthlink.net/~belinkoff/
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