Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-12 Thread akozak
That is why I could see bad bokeh since many probably third factors affected the final 
result which was not bad.
Maybe in other circumstances I would see it. I just must try again.
Alek
Uytkownik Keith Whaley [EMAIL PROTECTED] napisa:
Dan Scott wrote:
 
 On Wednesday, December 11, 2002, at 10:46 AM, Fred wrote:
 
  What is judged good or bad bokeh depends only on the lens, not the
  subject's surroundings. What surrounds the subject may be judged
  to be a good or bad choice of _background_, but whether the image
  exhibits acceptable _bokeh_ depends ONLY on the lens. In my
  opinion of what I understand.
 
  I would say that you are correct, Keith. Nonetheless, the choice of
  background (and sometimes foreground) when shooting, when making
  such a choice is possible, can make lenses with bad bokeh (even
  mirror lenses, for example, which are my own worst lenses for bokeh)
  look pretty good (for bokeh) - g.
 
  Fred
 
 
 Fred's right. Bokeh won't be a problem if you don't have any objects of
 the right sort in the right spot, foreground or background. The optical
 characteristics of the lens are in the lens, but you need the right
 combination of elements in the scene being photographed for bad bokeh
 to end up on the film. Plus, the third factor affecting valuation of
 bokeh is the viewer. If you like the bokeh in evidence on the print or
 transparency, it's good bokeh if you don't, it's bad.

Quite clearly, that's abundantly true! grin

Thanks for the clarification!

keith
 
 Dan Scott

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Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-12 Thread akozak

Hi Fred,
What about bokeh if one step down a bit aperture? Does it improve?
Alek

 Fred [EMAIL PROTECTED] napisa:
 What is judged good or bad bokeh depends only on the lens, not the
 subject's surroundings. What surrounds the subject may be judged
 to be a good or bad choice of _background_, but whether the image
 exhibits acceptable _bokeh_ depends ONLY on the lens. In my
 opinion of what I understand.

I would say that you are correct, Keith. Nonetheless, the choice of
background (and sometimes foreground) when shooting, when making
such a choice is possible, can make lenses with bad bokeh (even
mirror lenses, for example, which are my own worst lenses for bokeh)
look pretty good (for bokeh) - g.

Fred

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Re: Re: Bad Bokeh vs. Baaaad Bokeh (WAS: Re: 100mm 2.8 Macro vs.100mm 2.8)

2002-12-12 Thread akozak
Hi Keith,
So after reading many opinions about bokeh it can be truth what I wrote that in some 
conditions I could see bad bokeh using K105/2.8. MAybe I chose them in such a way that 
it was quiete nice.Maybe in other ones bokeh could be harsh.
But in general this lens is very sharp and contrasty.
Alek
Uytkownik Keith Whaley [EMAIL PROTECTED] napisa:
Well espoused, Mike. I'll look forward to the write-up with enthusiasm!

keith

Mike Johnston wrote:
 
  This is an interesting idea: Could the choice of background *and* distance
  from main focus of interest in a photograph be more of an influence than
  lens design in the perception of bad bokeh?
 
 Tim,
 In my researches (don't ask), a number of things affect the bokeh: lens
 design, aperture shape, aperture setting, focusing distance, distance of the
 background objects from the plane of focus, and the contrast, illumination,
 and edge texture of the out-of-focus objects.
 
 IN GENERAL, the worst-case bokeh is found for most lenses a) at wider
 apertures, b) closer focusing distances, c) with distant out-of-focus
 objects d) when those objects are well illuminated and have high contrast.
 
 So you can deduce that most lenses to do relatively better when stopped
 down, focused farther away, with low-contrast and/or darker objects not so
 far in the background. Also, objects with indeterminate or ragged edges will
 often appear smoother as long as they're sufficiently o-o-f. You can
 actually see this effect in pictures where you may have one hard-edged
 object at the same distance as much softer subject matter, like a bright
 metal pipe against a muted brick wall or a light-colored streetlight pole
 against a mass of foliage. In those cases, where the brick or the foliage
 might be perfectly unobtrusive, the harder shape can show more obvious
 _ni-sen_ or double-line effect.
 
 I'm going to do a column on Luminous-Landscape about testing lenses for
 bokeh, including illustrations that will greatly help clarify the issues,
 but it's going to be a lot of work to prepare and I don't know when I'm
 going to be able to get around to it. Hope this helps somewhat in the
 meantime.
 
 --Mike

--r-e-k-l-a-m-a-

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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-11 Thread Keith Whaley


[EMAIL PROTECTED] wrote:
 
 Hi,
 Maybe I was shooting at the place where bohek looked quite good. Maybe in different 
one it would show its bad face as you wrote. I do not argue with you just exchange 
opinions. 

What is judged good or bad bokeh depends only on the lens, not the
subject's surroundings.
What surrounds the subject may be judged to be a good or bad choice of
_background_, but whether the image exhibits acceptable _bokeh_
depends ONLY on the lens.
In my opinion of what I understand.

keith whaley

 Maybe in my conditions I bokeh was nice. It also should depends on background.
 Of course I do not portraits at infnity. I just wrote that I mostly shot at infinity 
and I took some pictures/portraits not at infinity of course.
 Alek




Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-11 Thread Dan Scott

On Wednesday, December 11, 2002, at 10:46  AM, Fred wrote:


What is judged good or bad bokeh depends only on the lens, not the
subject's surroundings. What surrounds the subject may be judged
to be a good or bad choice of _background_, but whether the image
exhibits acceptable _bokeh_ depends ONLY on the lens. In my
opinion of what I understand.


I would say that you are correct, Keith.  Nonetheless, the choice of
background (and sometimes foreground) when shooting, when making
such a choice is possible, can make lenses with bad bokeh (even
mirror lenses, for example, which are my own worst lenses for bokeh)
look pretty good (for bokeh) - g.

Fred



Fred's right. Bokeh won't be a problem if you don't have any objects of 
the right sort in the right spot, foreground or background. The optical 
characteristics of the lens are in the lens, but you need the right 
combination of elements in the scene being photographed for bad bokeh 
to end up on the film. Plus, the third factor affecting valuation of 
bokeh is the viewer. If you like the bokeh in evidence on the print or 
transparency, it's good bokeh if you don't, it's bad.

Dan Scott



Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-11 Thread Keith Whaley


Dan Scott wrote:
 
 On Wednesday, December 11, 2002, at 10:46  AM, Fred wrote:
 
  What is judged good or bad bokeh depends only on the lens, not the
  subject's surroundings. What surrounds the subject may be judged
  to be a good or bad choice of _background_, but whether the image
  exhibits acceptable _bokeh_ depends ONLY on the lens. In my
  opinion of what I understand.
 
  I would say that you are correct, Keith.  Nonetheless, the choice of
  background (and sometimes foreground) when shooting, when making
  such a choice is possible, can make lenses with bad bokeh (even
  mirror lenses, for example, which are my own worst lenses for bokeh)
  look pretty good (for bokeh) - g.
 
  Fred
 
 
 Fred's right. Bokeh won't be a problem if you don't have any objects of
 the right sort in the right spot, foreground or background. The optical
 characteristics of the lens are in the lens, but you need the right
 combination of elements in the scene being photographed for bad bokeh
 to end up on the film. Plus, the third factor affecting valuation of
 bokeh is the viewer. If you like the bokeh in evidence on the print or
 transparency, it's good bokeh if you don't, it's bad.

Quite clearly, that's abundantly true! grin

Thanks for the clarification!

keith
 
 Dan Scott




Re: Bad Bokeh vs. Baaaad Bokeh (WAS: Re: 100mm 2.8 Macro vs.100mm 2.8)

2002-12-11 Thread Mike Johnston
 This is an interesting idea: Could the choice of background *and* distance
 from main focus of interest in a photograph be more of an influence than
 lens design in the perception of bad bokeh?


Tim,
In my researches (don't ask), a number of things affect the bokeh: lens
design, aperture shape, aperture setting, focusing distance, distance of the
background objects from the plane of focus, and the contrast, illumination,
and edge texture of the out-of-focus objects.

IN GENERAL, the worst-case bokeh is found for most lenses a) at wider
apertures, b) closer focusing distances, c) with distant out-of-focus
objects d) when those objects are well illuminated and have high contrast.

So you can deduce that most lenses to do relatively better when stopped
down, focused farther away, with low-contrast and/or darker objects not so
far in the background. Also, objects with indeterminate or ragged edges will
often appear smoother as long as they're sufficiently o-o-f. You can
actually see this effect in pictures where you may have one hard-edged
object at the same distance as much softer subject matter, like a bright
metal pipe against a muted brick wall or a light-colored streetlight pole
against a mass of foliage. In those cases, where the brick or the foliage
might be perfectly unobtrusive, the harder shape can show more obvious
_ni-sen_ or double-line effect.

I'm going to do a column on Luminous-Landscape about testing lenses for
bokeh, including illustrations that will greatly help clarify the issues,
but it's going to be a lot of work to prepare and I don't know when I'm
going to be able to get around to it. Hope this helps somewhat in the
meantime.

--Mike


Mike Johnston


See my weekly online column about photography at either of these two
locations:

http://www.luminous-landscape.com/columns/sunday1.shtml

http://www.steves-digicams.com/smp/smp_index.html

Also, check out my new monthly column in the English _Black  White
Photography_ magazine!




 




Re: Bad Bokeh vs. Baaaad Bokeh (WAS: Re: 100mm 2.8 Macro vs.100mm 2.8)

2002-12-11 Thread Keith Whaley
Well espoused, Mike. I'll look forward to the write-up with enthusiasm!

keith

Mike Johnston wrote:
 
  This is an interesting idea: Could the choice of background *and* distance
  from main focus of interest in a photograph be more of an influence than
  lens design in the perception of bad bokeh?
 
 Tim,
 In my researches (don't ask), a number of things affect the bokeh: lens
 design, aperture shape, aperture setting, focusing distance, distance of the
 background objects from the plane of focus, and the contrast, illumination,
 and edge texture of the out-of-focus objects.
 
 IN GENERAL, the worst-case bokeh is found for most lenses a) at wider
 apertures, b) closer focusing distances, c) with distant out-of-focus
 objects d) when those objects are well illuminated and have high contrast.
 
 So you can deduce that most lenses to do relatively better when stopped
 down, focused farther away, with low-contrast and/or darker objects not so
 far in the background. Also, objects with indeterminate or ragged edges will
 often appear smoother as long as they're sufficiently o-o-f. You can
 actually see this effect in pictures where you may have one hard-edged
 object at the same distance as much softer subject matter, like a bright
 metal pipe against a muted brick wall or a light-colored streetlight pole
 against a mass of foliage. In those cases, where the brick or the foliage
 might be perfectly unobtrusive, the harder shape can show more obvious
 _ni-sen_ or double-line effect.
 
 I'm going to do a column on Luminous-Landscape about testing lenses for
 bokeh, including illustrations that will greatly help clarify the issues,
 but it's going to be a lot of work to prepare and I don't know when I'm
 going to be able to get around to it. Hope this helps somewhat in the
 meantime.
 
 --Mike




Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-11 Thread Lon Williamson
The M 100 4 Macro is a fairly small puppy.
This fact alone is worth keeping it, IMHO.
Got it, love it.

-Lon

Heiko Hamann wrote:
 
 Hi akozak,
 
 on 09 Dec 02 you wrote in pentax.list:
 
 Interesting. According too many users K105 is much better.Maybe you had
 bad lens, difficult to say. Even on Stan Halpin's site most people
 prefer old K lens. Alek
 
 Yes, I had read that before buying the lenses and I was very surprised,
 also. It seems, that everybody has to make his own experiences...
 
 Regards, Heiko




Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread akozak
Hi,
What does exactly harsh bokeh mean? I see my K105/2.8 is very sharp (Velvia) and 
wonder what you mean saying about harsh bokeh..How does it perform if compared with 
Nikkor 105/2.5?
Alek

Uytkownik Dan Scott [EMAIL PROTECTED] napisa:
On Monday, December 9, 2002, at 08:41 PM, Fred wrote:

 Yep, but at the same time, the lens is reknown to have a harsh
 bokeh. Which is not important to all of us and certainly not to
 N*k*n users.

 Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
 bokeh:

 http://www.cetussoft.com/pentax/k105f28/

 [Make sure you're sitting down before you click on the Some plants
 at f/2.8 link - g.]


woah...flashback city.

Nasty.

Dan Scott

--r-e-k-l-a-m-a-

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Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread akozak
But I shot some portraits and they looked very good.So where is the problem?How to 
describe bokeh in other words?
Alek

[EMAIL PROTECTED] napisa:
 Yep, but at the same time, the lens is reknown to have a harsh
 bokeh. Which is not important to all of us and certainly not to
 N*k*n users.

Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
bokeh:

http://www.cetussoft.com/pentax/k105f28/

[Make sure you're sitting down before you click on the Some plants
at f/2.8 link - g.]

In general, I like the ol' SMC K lenses a lot. I liked this lens,
too, ~except~ for its bokeh. However, bokeh is important to me in a
100-ish lens, which I would often be using for portraits, so I sent
my K 105/2.8 on to another home...

Fred

--r-e-k-l-a-m-a-

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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread Keith Whaley


[EMAIL PROTECTED] wrote:
 
 But I shot some portraits and they looked very good.So where is the problem?
 How to describe bokeh in other words?
 Alek

First, you have to learn what bokeh is.
A very good article on bokeh is located at:

http://www.trenholm.org/hmmerk/ATVB.pdf

Keith Whaley

 
 [EMAIL PROTECTED] napisa3:
  Yep, but at the same time, the lens is reknown to have a harsh
  bokeh. Which is not important to all of us and certainly not to
  N*k*n users.
 
 Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
 bokeh:
 
 http://www.cetussoft.com/pentax/k105f28/
 
 [Make sure you're sitting down before you click on the Some plants
 at f/2.8 link - g.]
 
 In general, I like the ol' SMC K lenses a lot. I liked this lens,
 too, ~except~ for its bokeh. However, bokeh is important to me in a
 100-ish lens, which I would often be using for portraits, so I sent
 my K 105/2.8 on to another home...
 
 Fred




Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread akozak
Thanks!
But shootig at infinity K105/2.8 should give great results I think. I nearly only 
shoot in this way so maybe that is why I did not observed the problem.
Do you have this lens?
Alek
Uytkownik Keith Whaley [EMAIL PROTECTED] napisa:
[EMAIL PROTECTED] wrote:
 
 But I shot some portraits and they looked very good.So where is the problem?
 How to describe bokeh in other words?
 Alek

First, you have to learn what bokeh is.
A very good article on bokeh is located at:

http://www.trenholm.org/hmmerk/ATVB.pdf

Keith Whaley

 
 [EMAIL PROTECTED] napisa3:
  Yep, but at the same time, the lens is reknown to have a harsh
  bokeh. Which is not important to all of us and certainly not to
  N*k*n users.
 
 Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
 bokeh:
 
 http://www.cetussoft.com/pentax/k105f28/
 
 [Make sure you're sitting down before you click on the Some plants
 at f/2.8 link - g.]
 
 In general, I like the ol' SMC K lenses a lot. I liked this lens,
 too, ~except~ for its bokeh. However, bokeh is important to me in a
 100-ish lens, which I would often be using for portraits, so I sent
 my K 105/2.8 on to another home...
 
 Fred

--r-e-k-l-a-m-a-

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Re: Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread akozak

Do you know if Nikkor 105/2.5 is better/worse than Pentax 105?
Alek
[EMAIL PROTECTED] napisa:
Thanks!
But shootig at infinity K105/2.8 should give great results I think. I nearly only 
shoot in this way so maybe that is why I did not observed the problem.
Do you have this lens?
Alek
Uytkownik Keith Whaley [EMAIL PROTECTED] napisa:
[EMAIL PROTECTED] wrote:
 
 But I shot some portraits and they looked very good.So where is the problem?
 How to describe bokeh in other words?
 Alek

First, you have to learn what bokeh is.
A very good article on bokeh is located at:

http://www.trenholm.org/hmmerk/ATVB.pdf

Keith Whaley

 
 [EMAIL PROTECTED] napisa3:
  Yep, but at the same time, the lens is reknown to have a harsh
  bokeh. Which is not important to all of us and certainly not to
  N*k*n users.
 
 Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
 bokeh:
 
 http://www.cetussoft.com/pentax/k105f28/
 
 [Make sure you're sitting down before you click on the Some plants
 at f/2.8 link - g.]
 
 In general, I like the ol' SMC K lenses a lot. I liked this lens,
 too, ~except~ for its bokeh. However, bokeh is important to me in a
 100-ish lens, which I would often be using for portraits, so I sent
 my K 105/2.8 on to another home...
 
 Fred

--r-e-k-l-a-m-a-

Masz do pacenia prowizji bankowi ?
mBank - za konto
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread Keith Whaley


[EMAIL PROTECTED] wrote:
 
 Thanks!
 But shootig at infinity K105/2.8 should give great results I think. 
 I nearly only shoot in this way so maybe that is why I did not observed the problem.
 Do you have this lens?
 Alek

No, I don't. 
I was only talking about bokeh, not about how good or not good the
lens is.
If you only use this lens at infinity setting, you'll probably never
even know about how this lens treats out of focus areas, so it's bokeh
is less unimportant - probably not worth talking about.

You said: But I shot some portraits and they looked very good. So
where is the problem?

If that makes you happy, then there IS no problem, Alek! smile

Keith Whaley


 U¿ytkownik Keith Whaley [EMAIL PROTECTED] napisa3:
 [EMAIL PROTECTED] wrote:
 
  But I shot some portraits and they looked very good.So where is the problem?
  How to describe bokeh in other words?
  Alek
 
 First, you have to learn what bokeh is.
 A very good article on bokeh is located at:
 
 http://www.trenholm.org/hmmerk/ATVB.pdf
 
 Keith Whaley

= snipped =




Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread Keith Whaley


[EMAIL PROTECTED] wrote:
 
 Do you know if Nikkor 105/2.5 is better/worse than Pentax 105?
 Alek

Me? No.
I don't own nor use Nikons, so I don't use Nikkor lenses.
Perhaps someone else on the list does. 

keith

 [EMAIL PROTECTED] napisa3:
 Thanks!
 But shootig at infinity K105/2.8 should give great results I think. I nearly only 
shoot in this way so maybe that is why I did not observed the problem.
 Do you have this lens?
 Alek
 U¿ytkownik Keith Whaley [EMAIL PROTECTED] napisa3:
 [EMAIL PROTECTED] wrote:
 
  But I shot some portraits and they looked very good.So where is the problem?
  How to describe bokeh in other words?
  Alek
 
 First, you have to learn what bokeh is.
 A very good article on bokeh is located at:
 
 http://www.trenholm.org/hmmerk/ATVB.pdf
 
 Keith Whaley
 
 
  [EMAIL PROTECTED] napisa3:
   Yep, but at the same time, the lens is reknown to have a harsh
   bokeh. Which is not important to all of us and certainly not to
   N*k*n users.
  
  Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
  bokeh:
  
  http://www.cetussoft.com/pentax/k105f28/
  
  [Make sure you're sitting down before you click on the Some plants
  at f/2.8 link - g.]
  
  In general, I like the ol' SMC K lenses a lot. I liked this lens,
  too, ~except~ for its bokeh. However, bokeh is important to me in a
  100-ish lens, which I would often be using for portraits, so I sent
  my K 105/2.8 on to another home...
  
  Fred
 
 --r-e-k-l-a-m-a-
 
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Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread William Johnson
Hi Alek,

Bokeh is how the areas of the picture that are not in focus are rendered.  Whether a 
lens has good bokeh or not is generally a personal preference.  Most people prefer a 
less distracting background than the pictures that are shown in Fred's link below.

I have this same lens and have taken some very nice portraits with it also, but I have 
also taken some that look just like Fred's examples also.  In my experience, with this 
lens, is that I have to be very careful to choose a non-competing background (no out 
of focus specular highlights, for sure) for this lens to be usuable.  Much more so 
than 
any other lens I own.  

It does make a good landscape/hiking lens when I am more likely using it focused close 
to infinity.

Hope this helps,

William in Utah.

12/10/2002 3:27:16 AM, [EMAIL PROTECTED] wrote:

But I shot some portraits and they looked very good.So where is the problem?How to 
describe bokeh in other words?
Alek

[EMAIL PROTECTED] napisa:
 Yep, but at the same time, the lens is reknown to have a harsh
 bokeh. Which is not important to all of us and certainly not to
 N*k*n users.

Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
bokeh:

http://www.cetussoft.com/pentax/k105f28/

[Make sure you're sitting down before you click on the Some plants
at f/2.8 link - g.]

In general, I like the ol' SMC K lenses a lot. I liked this lens,
too, ~except~ for its bokeh. However, bokeh is important to me in a
100-ish lens, which I would often be using for portraits, so I sent
my K 105/2.8 on to another home...

Fred

--r-e-k-l-a-m-a-

Masz do pacenia prowizji bankowi ?
mBank - za konto
http://epieniadze.onet.pl/mbank 









Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread Fred
 But I shot some portraits and they looked very good.

 But shootig at infinity K105/2.8 should give great results I
 think. I nearly only shoot in this way so maybe that is why I did
 not observed the problem.

Did you shoot the portraits at infinity?

 Do you have this lens?

Well, I used to have one, but I sold it, and specifically for its
bokeh characteristics.

Fred





Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread Fred
 I see my K105/2.8 is very sharp (Velvia) and wonder what you mean
 saying about harsh bokeh.

 How to describe bokeh in other words?

The K 105/2.8 is indeed very sharp, for in-focus subjects.  However,
it also seems to produce rather sharp outlines around out-of-focus
objects, too (i.e., harsh bokeh).

Fred





Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-10 Thread Dan Scott

On Tuesday, December 10, 2002, at 06:11  AM, Keith Whaley wrote:



You said: But I shot some portraits and they looked very good. So
where is the problem?

If that makes you happy, then there IS no problem, Alek! smile

Keith Whaley



Very true.

Dan Scott




Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-09 Thread akozak
Instead od M100/2.8 try to find K105/2.8, it is allegedly much better lens ( I own 
it-very nice)
Alek

Uytkownik Ken Archer [EMAIL PROTECTED] napisa:
I just bought a M 100/2.8 on your advice. I don't need a macro, but I 
did need a 100/105 lens for field portraits of handlers with their 
dogs. This is probably one of the easiest lens to focus for a guy who 
went mostly to AF because of bad eyes. I love this lens. Thanks for 
your great contributions to the PDML.

Ken

On Saturday 15 June 2002 02:16 am, Mark Cassino wrote:
 On macro vs non macro lenses: I have an M 100 f2.8 and a Kiron 105mm
 f2.8 macro (identical to the Vivitar Series 1 100mm f2.5). With the M
 lens it takes about a 100 degree turn of the lens to move form
 infinity to 2 meters focus distance. With the Kiron it takes about a
 30 degree twist. Yes - you can keep turning the Kiron forever till
 it gets to 1:1, but for fine adjustment of focus at longer working
 distances, non macros are better. (And thanks to Valentin Donisia who
 taught me this - though I argued the point with him at the time!)
-- 
Ken Archer Canine Photography
San Antonio, Texas
Business Is Going To The Dogs

--r-e-k-l-a-m-a-

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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-09 Thread Heiko Hamann
Hi Alek,

on 09 Dec 02 you wrote in pentax.list:

Instead od M100/2.8 try to find K105/2.8, it is allegedly much better lens (
I own it-very nice) Alek

Not necessarily. I've owned both M100 and K105 and found the M100 better  
(sharper, more contrast, lighter). So I've sold the K105 and kept the  
M100 which I am *very* satisfied with. Either I had a poor K105 or my  
M100 is an outstanding good performer...

Regards, Heiko




Re: Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-09 Thread akozak
Hi,
Interesting. According too many users K105 is much better.Maybe you had bad lens, 
difficult to say. 
Even on Stan Halpin's site most people prefer old K lens.
Alek

ytkownik Heiko Hamann [EMAIL PROTECTED] napisa:
Hi Alek,

on 09 Dec 02 you wrote in pentax.list:

Instead od M100/2.8 try to find K105/2.8, it is allegedly much better lens (
I own it-very nice) Alek

Not necessarily. I've owned both M100 and K105 and found the M100 better 
(sharper, more contrast, lighter). So I've sold the K105 and kept the 
M100 which I am *very* satisfied with. Either I had a poor K105 or my 
M100 is an outstanding good performer...

Regards, Heiko

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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-09 Thread Heiko Hamann
Hi akozak,

on 09 Dec 02 you wrote in pentax.list:

Interesting. According too many users K105 is much better.Maybe you had
bad lens, difficult to say. Even on Stan Halpin's site most people
prefer old K lens. Alek

Yes, I had read that before buying the lenses and I was very surprised,  
also. It seems, that everybody has to make his own experiences...

Regards, Heiko




Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-09 Thread Fred
 Yep, but at the same time, the lens is reknown to have a harsh
 bokeh. Which is not important to all of us and certainly not to
 N*k*n users.

Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
bokeh:

http://www.cetussoft.com/pentax/k105f28/

[Make sure you're sitting down before you click on the Some plants
at f/2.8 link - g.]

In general, I like the ol' SMC K lenses a lot.  I liked this lens,
too, ~except~ for its bokeh.  However, bokeh is important to me in a
100-ish lens, which I would often be using for portraits, so I sent
my K 105/2.8 on to another home...

Fred





Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-09 Thread Dan Scott

On Monday, December 9, 2002, at 08:41  PM, Fred wrote:


Yep, but at the same time, the lens is reknown to have a harsh
bokeh. Which is not important to all of us and certainly not to
N*k*n users.


Yes, the K 105/2.8 is a sharp lens, but (unfortunately) so is its
bokeh:

http://www.cetussoft.com/pentax/k105f28/

[Make sure you're sitting down before you click on the Some plants
at f/2.8 link - g.]



woah...flashback city.

Nasty.

Dan Scott




Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-12-08 Thread Ken Archer
I just bought a M 100/2.8 on your advice.  I don't need a macro, but I 
did need a 100/105 lens for field portraits of handlers with their 
dogs.  This is probably one of the easiest lens to focus for a guy who 
went mostly to AF because of bad eyes.  I love this lens.  Thanks for 
your great contributions to the PDML.

Ken

On Saturday 15 June 2002 02:16 am, Mark Cassino wrote:
 On macro vs non macro lenses: I have an M 100 f2.8 and a Kiron 105mm
 f2.8 macro (identical to the Vivitar Series 1 100mm f2.5). With the M
 lens it takes about a 100 degree turn of the lens to move form
 infinity to 2 meters focus distance. With the Kiron it takes about a
 30 degree twist.  Yes - you can keep turning the Kiron forever till
 it gets to 1:1, but for fine adjustment of focus at longer working
 distances, non macros are better. (And thanks to Valentin Donisia who
 taught me this - though I argued the point with him at the time!)
-- 
Ken Archer Canine Photography
San Antonio, Texas
Business Is Going To The Dogs




Re: 100mm 2.8 Macro vs. 100mm 2.8 long

2002-06-14 Thread William Robb

- Original Message -
From:
Subject: Re: 100mm 2.8 Macro vs. 100mm 2.8 long


 In a message dated 6/13/2002 8:56:44 PM Pacific Daylight Time,
 [EMAIL PROTECTED] writes:


  other lenses that are just as good and many that are -- dare
I say
  it -- even better.

 Yes! Now it can be told! Zeiss, Kern Switar, Angenieux,
Schneider and others
 are every bit as good if not better than Pentax. Dare I
suggest the same is
 true of C and N?

Interesting thread degeneration here.

William Robb
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Re: 100mm 2.8 Macro vs. 100mm 2.8 long

2002-06-14 Thread Pål Audun Jensen

First off, let me say that I own many Pentax lenses including the 15mm, 35mm
K 3.5, 28mm K 3.5, 30 mm 2.8, 120mm 2.8, 100mm f4, 200 f2.5mm, 300mmf4A*,
400mm f5.6, just to name a few. But I don't for a minute think that they are
far superior to other lenses.


It's not about far superiority but the fact that you're buying into a 
certain optical look. If you ignore it, then it's just fine but why then 
buy anything with K-mount if you just want the job done?


  They get the job done and I would wager
that no one could tell if the images were shot with or without Pentax lenses
any more than you could tell if they were shot with a Nikon or Canon lens.


You'll certainly see the difference if you have references. If you put two 
slides on the light table shot with different lenses you'll see the 
difference, particularly in color rendition.



It's not the lenses that make the shot. They are simply a tool to get the job
done. A good lens is a good lens.


It isn't that simple. I mean, you can use the same argument about anything 
like food is food. A car is a car - it's the driver that counts.
I'm sure some doesn't see the finer things in lenses but I've learned to 
appreciate the certain characteristics of (most) Pentax lenses over the 
years. I cannot understand why using Pentax if not to take advantage of 
their greatest plusses; the lenses including SMC.



So give up the snobbery about Pentax lenses, they're good, we love them but
there are other lenses that are just as good and many that are -- dare I say
it -- even better.


Perhaps, but none of them are third party lenses.

Pål
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Pentax lenses vs. the world? (was Re: 100mm 2.8 Macro vs. 100mm 2.8 long)

2002-06-14 Thread Paul F. Stregevsky

Vic ([EMAIL PROTECTED]) wrote:

I would wager that no one could tell if the images were shot with or 
without Pentax lenses any more than you could tell if they were shot with a 
Nikon or Canon lens. Come on guys. Bokeh smokeh. Get real.

I'm reminded of Shel's amusing tale about how he posted a shot or two taken 
with his SMC or Super-Multi-Coated 50/1.4 to the Leica user group and 
several members remarked how only a Leica could have produced such 
marvelous contrast and sharpness.

There's nothing like a blind comparison to bring out the truth.

That's not to say I can't distinguish gross differences, or differences in 
coloration. There's no getting around differences in distortion. And some 
lenses have more bite.

Perhaps the distinction is more fair when we confine the subject to 
resolution and limit our statement to the following: Unless you use 
low-speed film and a tripod or high shutter speed, resolution is wasted.

Paul Franklin Stregevsky
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Re: Pentax lenses vs. the world? (was Re: 100mm 2.8 Macro vs. 100mm 2.8 long)

2002-06-14 Thread Alan Chan

I would wager that no one could tell if the images were shot with or
without Pentax lenses any more than you could tell if they were shot with a
Nikon or Canon lens. Come on guys. Bokeh smokeh. Get real.

I don't know about Canon, but I used to have some AF Nikkors. The colour 
reproduction from some of them appeared very different from the rather 
pale SMC lenses. I'd say they were particular great for landscapes. About 
the bokeh, most of my Pentax lenses don't have good bokeh (imo). But one 
thing remains true, SMC lenses are far more flare resistance than Nikkors. 
Unfortunately, Pentax don't mention that in their ads (so don't blame the 
customers didn't choose Pentax).

regards,
Alan Chan


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Re: Pentax lenses vs. the world? (was Re: 100mm 2.8 Macro vs. 100mm 2.8 long)

2002-06-14 Thread Knut Kampe

I'm sure Pentax is surpassed at times, but I'm surprised at your statements 
concerning the following comparisons:

1) FA 35/2.0 AL  versus Zeiss Jena 35/2.4 (M42)
I would bet that resolution will be better for the Pentax, especially in 
the corners at at any f-stop below f4. I'm not sure in what 'overall' 
qualities the FA would be inferior to the Zeiss, since it also is 
extraordinarily contrasty and has surprisingly good bokeh (see Takinami's 
website).

2) The Pentax F/FA 50/2.8 macro is quite an extraordinary lens - what is 
the evidence, that the Sigma 50/2.8 is better?

3) Curious: do you have the source for the comparison of the A 135/1.8 and 
Vivitar Series 1 135/2.3? The A 135/1.8 is not quite as sharp as the A 
85/1.4 -but I always thought that this is as sharp as 135mm lenses get. 
Would be interested to know if the Vivitar is really better (comparing same 
f-stops of course).

Knut

PS: Carl Zeiss Jena did produce some quite extraordinary lenses! I do think 
they are great! But the limitations of non-autodiaphragm screw mounts must 
be considered as well.


At 10:18 14.06.02 -0400, you wrote:
I won't even get into which third-party lenses are as good as Pentax; there
are too many. But based largely on testimonials, I'd vouch that the
following third-party lenses are superior to their Pentax counterparts:

Carl Zeiss Jena 20/4 (M42) vs. Pentax 20/4 or 20/2.8 in rectilinearity
Carl Zeiss Jena 35/2.4 (M42) vs. any Pentax 35/2 or 2.8 in overall qualities
Sigma 50/.28 and 100/2.8 vs. Pentax 50/2.8 and 100/2.8 in sharpness
Vivitar Series 1 135/2.3 (M42 or K) vs. any Pentax 135 (even the 135/1.8
PKA) in sharpness
Carl Zeiss Jena 180/2.8 Sonnar (latter, autodiaphragm version) and 200/2.8
Sonnar vs. Pentax 200/2.8
Carl Zeiss Jena 300/4 Sonnar Auto Electric (M42) vs. Takumar 300/4 in
sharpness, linear correction, and color, and bokeh

I've sold off six of my Pentax lenses. Of the 12 lenses that I still have,
only three are Pentaxes, and of those, only one below 200 mm. In fairness,
I parted with some of these because I had duplicates and felt that I didn't
need the Pentax advantage in that focal length.


Paul Franklin Stregevsky
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Re: Pentax lenses vs. the world? (was Re: 100mm 2.8 Macro vs. 100mm 2.8 long)

2002-06-14 Thread Bmacrae

In a message dated 6/14/2002 8:24:15 AM Pacific Daylight Time, 
[EMAIL PROTECTED] writes:


 Art directors have a funny way of
 noticing little things like changes in colour rendition.
 I found this to be such an issue that I changed from Nikon to
 Pentax, partly to get similar rendition between my medium format
 and 35mm work.

This is the best reason I've heard for sticking to one maker of lenses.

-Brendan MacRae
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Re: Pentax lenses vs. the world? (was Re: 100mm 2.8 Macro vs. 100mm 2.8 long)

2002-06-14 Thread Knut Kampe

Just to add:

Formally tested the F 50/2.8 is definitely better than the Sigma 50/2.8 EX 
in contrast as well as resolution according to the www.photodo.com website.

Knut
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Re: Pentax lenses vs. the world? (was Re: 100mm 2.8 Macro vs. 100mm 2.8 long)

2002-06-14 Thread Paul F. Stregevsky

Knut,

You're right about the 35/2 FA; I had forgotten about this autofocus lens.

I guess I stand corrected about the Sigma 50 macro being sharper than the 
Pentax 50/2.8 FA. It sharpness is nothing short of phenomenal. Yoshihiko 
Takinami writes: This macro is excellent not only for macro work but also 
for normal use. Better than Sigma EX because the SMC coating is better 
In my experiences, FA50/2.8 macro seems the *sharpest* with great resolving 
power and contrast. And David Collett of Oxford University: My top two 
sharpest primes (from a subjective rather than objective measurement) are 
the FA50/2.8 macro and my k35/3.5. My A50/1.4 is a pretty close third.

In favor of the Sigma, Tanya wrote, Took the most 
three-dimensional-looking pictures I've ever seen. And there are also 
numerous superlatives, as I recall, by users at the various lens rating 
sites. I think Tanya's comment and others I've read left me with the 
impression that the Sigma was the macro to beat.

Now to the 135mm contest: Pentax 135/1.8 vs. Vivitar Series 1 135/2.3. 
Somehow, all my collected comments on the Pentax have been erased. The 
comments I've collected about the Vivitar state that it's sharp at all 
apertures. The Pentax, as I recall, must be stopped down a bit to become 
truly sharp. Not surprising, since it's about two-thirds stop faster but 
only 5mm wider in filter size. I was drawing an inference that it can't 
be sharper than the Vivitar.

I also agree with you that the lack of an autodiaphragm can be a big drawback.

Paul Franklin Stregevsky
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Re: Pentax lenses vs. the world? (was Re: 100mm 2.8 Macro vs. 100mm 2.8 long)

2002-06-14 Thread Rob Studdert

On 14 Jun 2002 at 15:06, Paul F. Stregevsky wrote:

 Now to the 135mm contest: Pentax 135/1.8 vs. Vivitar Series 1 135/2.3. 
 Somehow, all my collected comments on the Pentax have been erased. The 
 comments I've collected about the Vivitar state that it's sharp at all 
 apertures. The Pentax, as I recall, must be stopped down a bit to become 
 truly sharp. Not surprising, since it's about two-thirds stop faster but 
 only 5mm wider in filter size. I was drawing an inference that it can't 
 be sharper than the Vivitar.

Paul,

You'd be wise not to draw solid conclusions on lens performance based on throw 
away comments by third party users or filter size. As you know I have the 
SMCPA*135/1.8 and I also had Contax equipment CZ135f2AE and CZ135f2.8MM. You 
can look up the CZ site and view the superb MTF diagrams for the 135f2.8 (the 
135f2 I can send you) however more practically I can tell you that I tested 
these three lenses under controlled conditions (one film K25, ML, solid tripod, 
40x mag etc). I found that the Pentax was better WRT flare resistance and 
absolute resolution at any aperture, I still own the Pentax lens and the CZ are 
long gone.

Cheers,

 Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
UTC(GMT)  +10 Hours
[EMAIL PROTECTED]
http://members.ozemail.com.au/~distudio/publications.html
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-14 Thread Mark Cassino

I've read through this thread and there's lots of interesting advice. A few 
points that you might want to consider:

On macro vs non macro lenses: I have an M 100 f2.8 and a Kiron 105mm f2.8 
macro (identical to the Vivitar Series 1 100mm f2.5). With the M lens it 
takes about a 100 degree turn of the lens to move form infinity to 2 meters 
focus distance. With the Kiron it takes about a 30 degree twist.  Yes - you 
can keep turning the Kiron forever till it gets to 1:1, but for fine 
adjustment of focus at longer working distances, non macros are better. 
(And thanks to Valentin Donisia who taught me this - though I argued the 
point with him at the time!)

Also the Kiron is much bigger and much heavier.

On Photodo tests: I value these tests and my experience with the lenses I 
own has been that there is a good correlation between what Photodo says and 
my personal impression of lens performance. But bear in mind that those 
tests are all done with the lens set to infinity focus. A lens that is a 
dog at infinity is probably a dog close up, but if you have two macro 
lenses that are very good at infinity, you may actually have one that 
is  very good at 1:1 while the other is excellent at 1:1 - and that's 
something Photodo can't tell you. So I tend to discount Photodo for macro 
performance because I don't think it really gets into that.

On using Pentax lenses: One of the great things about Pentax is that has 
maintained backwards compatibility better than any other brand. I agree 
that many Pentax lenses share an aesthetic quality that sets them apart, 
and that's a strong reason to use them. But I also relish the ability to 
use older lenses of other brands with my current gear - like the Kiron and 
some of the older Rikenon lenses that I favor. So I'd argue that the 
ability to use these off brand, older lenses, and enjoy their unique 
characteristics, is all part and parcel of the Pentax experience. And I 
don't have any qualms about using modern third party lenses if they can do 
the job adequately.

On lens performance in general: In terms of sharpness, if you have good 
technique you'll see the difference between an average lens and a very good 
lens, if you have excellent technique you will see the difference between a 
very good and excellent lens, and if you have totally impeccable technique 
you can see the difference between an excellent and outstanding lens. Once 
or twice I've managed to produce shots with my A* 200mm macro (outstanding 
lens) that beat the best I can do with my Kiron 105mm macro (excellent 
lens) - but all to often I am the limiting factor, or the realities of the 
shooting situation are the limiting factor.

My two cents - if you want to do macro, most of the 100mm macros out there 
are pretty good - Pentax (of course) but also Vivitar, Kiron, Tokina, 
Tamron, etc. So if you want to do macro find out what's available, research 
what's best, and make a decision.  When you get to the point where your 
technique is so good that you reach the limits of your glass  - then 
upgrade.  For portraits - hang onto your M 100 f2.8 - the ability to focus 
more finely / accurately at the working distance of a portrait will be 
worth it.

- MCC







At 05:36 PM 6/12/2002 -0400, you wrote:
Hey gang...

I currently have the M version of the 100mm f2.8. I really enjoy the results
this lens produces. However, I'm in the market for a macro lens and I want to
know how the f2.8 100mm Macro does for non-macro/portrait work. Is it as
sharp or sharper that the m and a series lenses?

Thanks.

Brendan MacRae

- - - - - - - - - -
Mark Cassino
Kalamazoo, MI
[EMAIL PROTECTED]
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Photos:
http://www.markcassino.com
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-13 Thread David . Mann

Mark Roberts wrote:

 The F version, by the way, is identical to the FA version except for
cosmetics
 and the replacement of the focus limit switch with a focus friction
control.

The FA has a focus limiter as well.  I think it limits to 2m or 1.5m or
thereabouts.

Cheers,

- Dave
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-13 Thread Sas Gabor

Hi,

On 12 Jun 2002 at 16:51, Mishka wrote:
 apart from myself, according to photodo.com the MTF ratings are
 (...)

photodo tests lenses at infinity, which IMHO isn't the apropriate method for 
macro lenses...


Gabor
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-13 Thread Pål Audun Jensen

Mishka wrote:


there are tons of very good used 3rd party macro lenses (i personally
have a pka vivitar ser. 1 100/2.5 -- terrific glass, terrific build,
does 1:1, and $135 is hard to beat; my only complain is that it focuses
the wrong way). unless you are a collector, or have tons of spare
cash and time, i see no reason whatsoever to lust for macro a*100/2.8



The reason for buying an A lens is that it is a Pentax. I see no point in 
buying Pentax if you ain't going to use Pentax lenses. Pentax lenses have a 
certain look (and I'm not thinking of what the lenses look like), a certain 
color rendition and contrast, a certain feel and finish. I'll say using non 
Pentax lenses on a Pentax body is heresy!

Pål
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-13 Thread Paul Jones

I sometimes find the photodo ratings a bit dubious. As in the chart they
have the F and FA with quite a large difference in peformance, although they
are optically identical.

I had the FA100/2.8 macro and now have the Tamron 90/2.5. I would disagree
with the photodo rating that the FA resolves less detail. Also the FA has
better colour rendition and flatness of field.

Regards,
Paul
- Original Message -
From: Mishka [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 13, 2002 9:51 AM
Subject: Re: 100mm 2.8 Macro vs. 100mm 2.8


 alright, lust doesn't have to be reasonable.
 let me rephrase it: the only limitation i have run into with series 1
 macro was film, not lens. provia 100f, scanned at 4000dpi.

 apart from myself, according to photodo.com the MTF ratings are

 Grade: 4.2 35mm/MF Tamron SP 90/2,5 macro
 Grade: 3.9 35mm/AF Tokina AT-X AF 100/2,8 Macro
 Grade: 4.6 35mm/MF Tokina AT-X 90/2,5 macro
 Grade: 4.2 35mm/AF Sigma AF 90/2,8 Makro discontinued
 Grade: 4.1 35mm/AF Sigma AF 105/2,8 EX Macro
 Grade: 3.9 35mm/AF Pentax SMC-FA Makro 100/2,8
 Grade: 4.3 35mm/AF Pentax SMC-F 100/2,8 macro
 Grade: 4 35mm/MF Vivitar 105/2,5 Macro Series 1

 so, yes, pentax has a lens that is a tad better than vivitar. and still
 behind tokina. whether it warrants 4 times the money, is, of course, a
 very personal thing.

 mishka

  From: William Robb
  Subject: Re: 100mm 2.8 Macro vs. 100mm 2.8
  
 From: Mishka
  Subject: Re: 100mm 2.8 Macro vs. 100mm 2.8
 
 
   unless you are a collector, or have tons of spare
   cash and time, i see no reason whatsoever to lust for macro
   a*100/2.8
 
  Obviously, you have never used one..g
 
  William Robb
 Yahoo! - Official partner of 2002 FIFA World Cup
 http://fifaworldcup.yahoo.com
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-13 Thread Mark Roberts

Paul Jones [EMAIL PROTECTED] wrote:

I sometimes find the photodo ratings a bit dubious. As in the chart they
have the F and FA with quite a large difference in peformance, although they
are optically identical.

Ditto for the F50/1.4 and the FA50/1.4
Photodo is completely bogus if you ask me.

-- 
Mark Roberts
www.robertstech.com
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Re: 100mm 2.8 Macro vs. 100mm 2.8 long

2002-06-13 Thread Bmacrae

In a message dated 6/13/2002 8:56:44 PM Pacific Daylight Time, 
[EMAIL PROTECTED] writes:


 other lenses that are just as good and many that are -- dare I say 
 it -- even better.

Yes! Now it can be told! Zeiss, Kern Switar, Angenieux, Schneider and others 
are every bit as good if not better than Pentax. Dare I suggest the same is 
true of C and N?

-Brendan MacRae
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Bob Rapp

Aside from the bulk, the 100 f2.8 macro is a much sharper lens. Macro
requires high correction, low distortion and flatness of field. The end
result is a fantastic general purpose lens.

Bob
- Original Message -
From: [EMAIL PROTECTED]

However, I'm in the market for a macro lens and I want to
 know how the f2.8 100mm Macro does for non-macro/portrait work. Is it as
 sharp or sharper that the m and a series lenses?

 Thanks.

 Brendan MacRae
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread William Robb

- Original Message -
From: Brendan MacRae


Subject: 100mm 2.8 Macro vs. 100mm 2.8


 Hey gang...

 I currently have the M version of the 100mm f2.8. I really
enjoy the results
 this lens produces. However, I'm in the market for a macro
lens and I want to
 know how the f2.8 100mm Macro does for non-macro/portrait
work. Is it as
 sharp or sharper that the m and a series lenses?

Are you talking about the A100mm f/2.8 macro or the autofocus
one?
My PUG picture this month is a portrait shot with the A100mm
f/2.8 macro. It's a pretty good portrait lens, actually. Until I
got the 77mm, I hadn't seen a lens with higher resolution and
contrast than the A100mm f/2.8 macro. The 77 may be
sharper/contrastier.

William Robb
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Mishka

brendan,

one thing for sure: it's a hell of a lot more
(1) heavier
(2) expensive (i'd gess ~$700)
(3) difficult to find
i don't own it, but i used to have m100/2.8 and i'd guess any decent
macro lens would be sharper. 

there are tons of very good used 3rd party macro lenses (i personally
have a pka vivitar ser. 1 100/2.5 -- terrific glass, terrific build,
does 1:1, and $135 is hard to beat; my only complain is that it focuses
the wrong way). unless you are a collector, or have tons of spare
cash and time, i see no reason whatsoever to lust for macro a*100/2.8

mishka

 From: Bmacrae 
 Subject: 100mm 2.8 Macro vs. 100mm 2.8 
 Date: Wed, 12 Jun 2002 14:25:49 -0700 
 
 
 
 Hey gang...
 
 I currently have the M version of the 100mm f2.8. I really enjoy the 
 results this lens produces. However, I'm in the market for a macro 
 lens and I want to know how the f2.8 100mm Macro does for non-
 macro/portrait work. Is it as sharp or sharper that the m and a 
 series lenses?
 
 Thanks.
 
 Brendan MacRae
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Shel Belinkoff

Use one ... compare the results to the $135.00 lens.  Then tell us what
you think.  Oh, make a print larger than 4x6 ...

Mishka wrote:

 there are tons of very good used 3rd party macro lenses (i personally
 have a pka vivitar ser. 1 100/2.5 -- terrific glass, terrific build,
 does 1:1, and $135 is hard to beat; my only complain is that it focuses
 the wrong way). unless you are a collector, or have tons of spare
 cash and time, i see no reason whatsoever to lust for macro a*100/2.8


scb
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Mishka

Bob,
The pictures are gorgeous. But that shows how good the photographer is.
At this resolution it tells next to nothing about the lens (except that
it focuses really close :) 
But then again, for $300 (as was the target price), I would be
tempted...

Mishka

 From: Rfsindg 
 Subject: Re: 100mm 2.8 Macro vs. 100mm 2.8 
 Date: Wed, 12 Jun 2002 17:34:48 -0700 
 
 
 
  From: Mishka
  unless you are a collector, or have tons of spare cash
  and time, i see no reason whatsoever to lust for macro a*100/2.8 
 
  William Robb replied:
  Obviously, you have never used one..g
 
 Bill,
 
 I looked at my PUG contributions... Lots with the A100/2.8 Macro.
 http://pug.komkon.org/01sep/Stail.html
 http://pug.komkon.org/01jul/bfly36.html
 http://pug.komkon.org/01jan/pointsettia.html
 http://pug.komkon.org/00sep/00sept/diamond.html
 http://pug.komkon.org/00marc/tulipb.html
 This is truly one of my favorite lenses.
 
 Regards,  Bob S.
Yahoo! - Official partner of 2002 FIFA World Cup
http://fifaworldcup.yahoo.com
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Mark Roberts

Mishka [EMAIL PROTECTED] wrote:

Bob,
The pictures are gorgeous. But that shows how good the photographer is.
At this resolution it tells next to nothing about the lens (except that
it focuses really close :) 
But then again, for $300 (as was the target price), I would be
tempted...

I bought my SMC-F 100/2.8 macro from KEH for $269.00
It was listed as bargain condition because a tiny hole had been drilled
through the filter ring, presumably to mount a ring flash. Filters still screw
on and off just fine.

The F version, by the way, is identical to the FA version except for cosmetics
and the replacement of the focus limit switch with a focus friction control.

-- 
Mark Roberts
www.robertstech.com
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Paul F. Stregevsky

Mishka wrote: According to photodo.com the MTF ratings are
Grade: 4.6 35mm/MF Tokina AT-X 90/2,5 macro
Grade: 3.9 35mm/AF Pentax SMC-FA Makro 100/2,8
Grade: 4.3 35mm/AF Pentax SMC-F 100/2,8 macro
Grade: 4 35mm/MF Vivitar 105/2,5 Macro Series 1
so, yes, pentax has a lens that is a tad better than Vivitar. and still
behind Tokina.

Actually, the Tokina AT-X 90/2.5 is the same as the Vivitar 90/2.5 Macro 
(1:2). That Vivitar, as has been stated here before, boasted the highest 
resolution score in Popular Photography's tests for many years.

I agree with Mishka entirely on this one. I have several quotes from Nikon 
users who say the Vivitar/Kiron 105 macro is as sharp as the Nikon; one 
sold his Nikon, seeing no point in keeping it. In a blind comparison, I 
doubt the Pentax would consistently be picked over the third-party macros 
as the winner. But then, I sold my SMC 28/2K and kept my Vivitar 28/1.9; 
sold my Pentax 50/1.4A and 50/1.2A and kept my Rikenon 50/2. For a 
photographer like me, who shoots primarily at ISO 400 and higher, ultimate 
sharpness isn't everything; I'll take sharp enough + great color (Vivitar 
28/1.9) or fidelity (Rikenon, which happens to be sharper than the Pentaxes 
from f/2 to f/4.5).


Paul Franklin Stregevsky
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Rfsindg

Mishka,

I agree about the resolution.  You can't tell much over the internet.

Still, I was surprised at how many of my PUG shots were with the macro.
I believe that I chose these photos because the slides were special.
They were exceptionally sharp, and drew my attention.

...And some of us bought this lens a long time ago, close to your price.

Regards,  Bob S.

[EMAIL PROTECTED] writes:

 Bob,
 The pictures are gorgeous. But that shows how good the photographer is.
 At this resolution it tells next to nothing about the lens (except that
 it focuses really close :) 
 But then again, for $300 (as was the target price), I would be
 tempted...
 
 Mishka
 
  From: Rfsindg 
  Subject: Re: 100mm 2.8 Macro vs. 100mm 2.8 
  Date: Wed, 12 Jun 2002 17:34:48 -0700 
  
  
  
   From: Mishka
   unless you are a collector, or have tons of spare cash
   and time, i see no reason whatsoever to lust for macro a*100/2.8 
  
   William Robb replied:
   Obviously, you have never used one..g
  
  Bill,
  
  I looked at my PUG contributions... Lots with the A100/2.8 Macro.
  http://pug.komkon.org/01sep/Stail.html
  http://pug.komkon.org/01jul/bfly36.html
  http://pug.komkon.org/01jan/pointsettia.html
  http://pug.komkon.org/00sep/00sept/diamond.html
  http://pug.komkon.org/00marc/tulipb.html
  This is truly one of my favorite lenses.
  
  Regards,  Bob S. 
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Pentxuser

Little bit of a cheap shot here. I'm with Mishka. A Vivitar or Tokina is 
going to give you just as good results as the Pentax. The feel might be 
different but the end result is not. The vivitar Series One, Tokina ATX and 
the Kiron 105mm macros were all excellent lenses in their day and they still 
are today. Macro lenses are so good that most films don't do them justice. 
Guys, I love Pentax lenses too but there are plenty of other lenses that are 
just as good - some even better. Theses other lenses  just don't hold their 
value the way the big name camera lenses do so they are always a better deal, 
unless you want to sell them.
Vic 

In a message dated 6/12/02 5:30:40 PM, [EMAIL PROTECTED] writes:

Use one ... compare the results to the $135.00 lens.  Then tell us what
you think.  Oh, make a print larger than 4x6 ...

Mishka wrote:
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Pentxuser

I'm with you Paul. I have both the Pentax 100mm F4 macro and the Tokina ATX 
90 F2.5. Both are excellent lenses but the Tokina gets more use primarily for 
its speed. 
Vic 


In a message dated 6/12/02 9:18:29 PM, [EMAIL PROTECTED] writes:

Actually, the Tokina AT-X 90/2.5 is the same as the Vivitar 90/2.5 Macro 
(1:2). That Vivitar, as has been stated here before, boasted the highest 
resolution score in Popular Photography's tests for many years.

I agree with Mishka entirely on this one. I have several quotes from Nikon 
users who say the Vivitar/Kiron 105 macro is as sharp as the Nikon; one 
sold his Nikon, seeing no point in keeping it. In a blind comparison, I 
doubt the Pentax would consistently be picked over the third-party macros 
as the winner. But then, I sold my SMC 28/2K and kept my Vivitar 28/1.9; 
sold my Pentax 50/1.4A and 50/1.2A and kept my Rikenon 50/2. For a 
photographer like me, who shoots primarily at ISO 400 and higher, ultimate 
sharpness isn't everything; I'll take sharp enough + great color (Vivitar 
28/1.9) or fidelity (Rikenon, which happens to be sharper than the Pentaxes 
from f/2 to f/4.5).
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread Pentxuser

Bob: I think there are lots of reasons photographers gravitate to one or two 
lenses. It's not necessarily that the lens is better than the other lenses in 
their arsenal, it's often because they feel comfortable with that lens. A 100 
F2.8 is a great lens whether it's a macro or not. I'll bet you like its feel, 
it's speed and the sharpness of the pictures keep you coming back to it.  


In a message dated 6/12/02 9:25:40 PM, [EMAIL PROTECTED] writes:

Mishka,

I agree about the resolution.  You can't tell much over the internet.

Still, I was surprised at how many of my PUG shots were with the macro.
I believe that I chose these photos because the slides were special.
They were exceptionally sharp, and drew my attention.

...And some of us bought this lens a long time ago, close to your price.

Regards,  Bob S.
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Re: 100mm 2.8 Macro vs. 100mm 2.8

2002-06-12 Thread William Robb

- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, June 12, 2002 8:52 PM
Subject: Re: 100mm 2.8 Macro vs. 100mm 2.8


 Little bit of a cheap shot here. I'm with Mishka. A Vivitar or
Tokina is
 going to give you just as good results as the Pentax. The feel
might be
 different but the end result is not. The vivitar Series One,
Tokina ATX and
 the Kiron 105mm macros were all excellent lenses in their day
and they still
 are today. Macro lenses are so good that most films don't do
them justice.
 Guys, I love Pentax lenses too but there are plenty of other
lenses that are
 just as good - some even better. Theses other lenses  just
don't hold their
 value the way the big name camera lenses do so they are always
a better deal,
 unless you want to sell them.
 Vic

Hell Vic, take a few more cheap shots!! Thats OK.
The end result is different. The bokeh of the A 100mm f/2.8 is
friggin amazing. I had one of those Vivitar 90mm f/2.5 macro
lenses that went 1:1 with no extenders. Reputed to be a fine
lens. I thought it was, to.
Problem was, it had sucky bokeh. So much for art!!.
Add to that the feel of the Pentax lens and the A 100mm f/2.8
macro is unbeatable.
BTW, Photodo has proven themselves time and again to have worse
that useless lens tests.
They fall into the sky is pink, I read it on the internet
category.

William Robb
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