Re: Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-27 Thread akozak
Hi,
I bought Tamron manual SP 90/2.8 macro for my PZ-1  but adapatall has not reach me so 
far:(
I have read some reviews of the lens and in German tests it performed super. And I 
have found Popular/Practical ( I do not remember which it was)Photography test of some 
macro lenses and Tamron got 9/10 and only canon USM beat it.It performed better than 
Nikkor and Pentax FA. So it must be very good beast!
Alek





Uytkownik Fred [EMAIL PROTECTED] napisa:
Hi, adphoto.

 Of the 4 which is the better macro?

Well, you have to be more specific, or expand your 4 -

There are (as far as I know) only one VS1 90/2.5, one VS1 105/2.5,
and one Kiron 105/2.8. However, there have been at least three
Tamron 90mm macros - the original (I believe) 90/2.5 with 49mm
threads, another 90/2.5 but with 55mm threads, and a 90/2.8 (which,
I think, is the newest one). (I am not knowledgeable about Tamron
macro lenses, so, anyone who knows more than this, please jump in
here.)

Then, although you didn't mention them, there have been other 90's -
the Tokina AT-X 90/2.5 (optically identical to the VS1), a Vivitar
non-VS1 90/2.8, a Sigma 90/2.8 - and there probably are still
others... And Ricoh has a 100/2.8 or 105/2.8 (I forget which)... And
then, of course, there are a few great Pentax 100's...

And, to confuse things further, some of these reach 1:1 all by
themselves, while some use an extension tube to do so, and some
(e.g., the VS1 90/2.5 and the AT-X 90/2.5) use an extender with
internal field-flattening elements to do so.

 is the 105mm 2.5 S1 vivitar the same as the 105mm 2.8 kiron?

Supposedly they are the same (although I've never had a chance to
check out the Kiron).

 Is the series 1 vivitar 90mm as good as its cult status ?

Yes indeed. However, I've ~never~ tried a 100-ish (90mm-105mm)
macro lens that was not a very good lens (and I've never heard bad
things about any, either, except for a Sigma 100/2.8 Micro-Macro
compromise that was apparently pretty soft closeup).

Fred



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

Chcesz oszczdzi na kosztach obsugi bankowej ?
mBIZNES - konto dla firm
http://epieniadze.onet.pl/mbiznes




Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-25 Thread Steve Larson
Hi,
 I can vouch for the VS1 90/2.5 is as good as its cult status. I can`t
say anything about the other lenses because I`ve never owned them,
but I`m sure they are very fine lenses. However, the VS1 90/2.5 is
sharp corner to corner even at f2.5 and exhibits a kind of 3D effect.

Steve Larson
Redondo Beach, California
Everyone has a photographic memory. Some just don't have film.

- Original Message - 
From: adphoto [EMAIL PROTECTED]
To: pdml [EMAIL PROTECTED]
Sent: Friday, January 24, 2003 9:36 PM
Subject: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm


 Of the 4 which is the better macro?
 is the 105mm 2.5 S1 vivitar the same as the 105mm 2.8 kiron?
 Is the series 1 vivitar 90mm as good as its cult status ?
 
 
 
 




Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-25 Thread Fred
Hi, adphoto.

 Of the 4 which is the better macro?

Well, you have to be more specific, or expand your 4 -

There are (as far as I know) only one VS1 90/2.5, one VS1 105/2.5,
and one Kiron 105/2.8.  However, there have been at least three
Tamron 90mm macros - the original (I believe) 90/2.5 with 49mm
threads, another 90/2.5 but with 55mm threads, and a 90/2.8 (which,
I think, is the newest one).  (I am not knowledgeable about Tamron
macro lenses, so, anyone who knows more than this, please jump in
here.)

Then, although you didn't mention them, there have been other 90's -
the Tokina AT-X 90/2.5 (optically identical to the VS1), a Vivitar
non-VS1 90/2.8, a Sigma 90/2.8 - and there probably are still
others... And Ricoh has a 100/2.8 or 105/2.8 (I forget which)... And
then, of course, there are a few great Pentax 100's...

And, to confuse things further, some of these reach 1:1 all by
themselves, while some use an extension tube to do so, and some
(e.g., the VS1 90/2.5 and the AT-X 90/2.5) use an extender with
internal field-flattening elements to do so.

 is the 105mm 2.5 S1 vivitar the same as the 105mm 2.8 kiron?

Supposedly they are the same (although I've never had a chance to
check out the Kiron).

 Is the series 1 vivitar 90mm as good as its cult status ?

Yes indeed.  However, I've ~never~ tried a 100-ish (90mm-105mm)
macro lens that was not a very good lens (and I've never heard bad
things about any, either, except for a Sigma 100/2.8 Micro-Macro
compromise that was apparently pretty soft closeup).

Fred




Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-25 Thread Fred
Hi, Steve.

 Is the series 1 vivitar 90mm as good as its cult status ?

 I can vouch for the VS1 90/2.5 is as good as its cult status. I
 can`t say anything about the other lenses because I`ve never owned
 them, but I`m sure they are very fine lenses. However, the VS1
 90/2.5 is sharp corner to corner even at f2.5 and exhibits a kind
 of 3D effect.

I have a few test macro shots taken using both the VS1 90/2.5 Macro
with and without its 1:1 Macro Adapter and its optical twin
(separated at birth - g), the Tokina AT-X 90/2.5 Macro, with and
without its 1:1 Macro Extender -

VS1 @ 4:1 @ f/8 (without 1:1 Macro Adapter) -
http://www.cetussoft.com/pentax/v9025/v9025-41-8.jpg

VS1 @ 2:1 @ f/8 (without 1:1 Macro Adapter) -
http://www.cetussoft.com/pentax/v9025/v9025-21-8.jpg

VS1 @ 1:1 @ f/8 (with 1:1 Macro Adapter) -
http://www.cetussoft.com/pentax/v9025/v9025-11-8.jpg

AT-X @ 4:1 @ f/8 (without 1:1 Macro Extender) -
http://www.cetussoft.com/pentax/x9025/x9025-41-8.jpg

AT-X @ 2:1 @ f/8 (without 1:1 Macro Extender) -
http://www.cetussoft.com/pentax/x9025/x9025-21-8.jpg

AT-X @ 1:1 @ f/8 (with 1:1 Macro Extender) -
http://www.cetussoft.com/pentax/x9025/x9025-11-8.jpg

Fred




Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-25 Thread Steve Larson
Hi Fred,
 I would say they are all pretty similar in resolving power and
color. I know the bokeh and 3D effect
comes into play nicely when the subject matter has more depth,
regarding the 90/2.5, and that would be without the 1:1 adapter.
Steve Larson
Redondo Beach, California
Everyone has a photographic memory. Some just don't have film.

- Original Message - 
From: Fred [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, January 25, 2003 7:51 AM
Subject: Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm


 Hi, Steve.
 
  Is the series 1 vivitar 90mm as good as its cult status ?
 
  I can vouch for the VS1 90/2.5 is as good as its cult status. I
  can`t say anything about the other lenses because I`ve never owned
  them, but I`m sure they are very fine lenses. However, the VS1
  90/2.5 is sharp corner to corner even at f2.5 and exhibits a kind
  of 3D effect.
 
 I have a few test macro shots taken using both the VS1 90/2.5 Macro
 with and without its 1:1 Macro Adapter and its optical twin
 (separated at birth - g), the Tokina AT-X 90/2.5 Macro, with and
 without its 1:1 Macro Extender -
 
 VS1 @ 4:1 @ f/8 (without 1:1 Macro Adapter) -
 http://www.cetussoft.com/pentax/v9025/v9025-41-8.jpg
 
 VS1 @ 2:1 @ f/8 (without 1:1 Macro Adapter) -
 http://www.cetussoft.com/pentax/v9025/v9025-21-8.jpg
 
 VS1 @ 1:1 @ f/8 (with 1:1 Macro Adapter) -
 http://www.cetussoft.com/pentax/v9025/v9025-11-8.jpg
 
 AT-X @ 4:1 @ f/8 (without 1:1 Macro Extender) -
 http://www.cetussoft.com/pentax/x9025/x9025-41-8.jpg
 
 AT-X @ 2:1 @ f/8 (without 1:1 Macro Extender) -
 http://www.cetussoft.com/pentax/x9025/x9025-21-8.jpg
 
 AT-X @ 1:1 @ f/8 (with 1:1 Macro Extender) -
 http://www.cetussoft.com/pentax/x9025/x9025-11-8.jpg
 
 Fred
 




Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-25 Thread Randy Stewart
I'm not in a position to offer much reply on comparison between these
lenses.  I bought a 105mm 2.5 Series One some years ago and at the time
noticed that its publihed test performance seemed generally superior to the
much older 90mm 2.5 Series One.  That's to be expected with a design some
10+ years newer, a more complex optical design and internal zoom type
mechanics which alter the element/group spacings as the lens is focussed to
maximize optical performance over the entire focus range, unlike the 90mm
2.5.

My 105mm Vivitar has performance sufficient for me to make 16x20 inch prints
from most of a full 35mm frame which compare favorably against similar
prints made from medium format negatives.  Modern Photo did a test
comparison of this lens against the 105mm 2.8 Micro Nikkor - performance
virtually the same overall.

My one big knock the 105mm Series One - weight.  It's big; It's heavy.  You
can get tired of hefting it around. I do not know how it compares in this to
the other lenses you are considering.

One final consideration - the 105mm Series One doesn't come along that
often, so one in nice condition might be a little hard to find in your
choice of lens mount.

The Tamron has a very good reputation, but I suspect that with a little
inquiry, you already know more about it than I do.  The maunual version of
this lens does, or at least did, use the Tamron interchargeable mount
system, so if you can find a good deal on th lens in any mount, fitting it
to your camera is not a problem.  I do or have used three different Tamrom
lenses with this interchangeable mount.  It works fine. Once you fit the
mount adapter to the lens, you wouldn't notice that it is interchangeable.

Randy Stewart


- Original Message -
From: adphoto [EMAIL PROTECTED]
To: pdml [EMAIL PROTECTED]
Sent: Friday, January 24, 2003 9:36 PM
Subject: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm


 Of the 4 which is the better macro?
 is the 105mm 2.5 S1 vivitar the same as the 105mm 2.8 kiron?
 Is the series 1 vivitar 90mm as good as its cult status ?








Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-25 Thread Paul Franklin Stregevsky
I used to own the Kiron 105/2.8PK; I now own the Tokina AT-X 90/2.5PK. The
Kiron didn't deliver sharp results until about f/5.6. That's why I sold it;
I use my portrait-length lens for general purpose, including shooting indoor
events under available light.

The Tokina is very sharp, even at f/2.5. I get such sharp results at f/2.5,
I almost feel as though I'm cheating. Its colors are noticeably snappier and
more saturated, too.

Note that the Tokina 90/2.5 focuses in the same direction as Pentax; the
Vivitar 90/2.5 does not. However, the Vivitar's 1:1 macro adapter has a
built-in tripod ring, unlike the other macros discussed in this thread. Of
course, you could match the Vivitar's adapter with the Tokina lens.

[EMAIL PROTECTED]
 





Re: vivitar 90mm 2.5 vs 105mm 2.5 vs105mm2.8 kiron vs tamron 90mm

2003-01-25 Thread Fred
Randy:

 I bought a 105mm 2.5 Series One some years ago and at the time
 noticed that its publihed test performance seemed generally
 superior to the much older 90mm 2.5 Series One.

I haven't (yet) seen any test of the VS1 105/2.5.  Do you have the
details?  Or, do you at least have the publication issue
information?

 That's to be expected with a design some 10+ years newer, a more
 complex optical design and internal zoom type mechanics which
 alter the element/group spacings as the lens is focussed to
 maximize optical performance over the entire focus range, unlike
 the 90mm 2.5.

It would seem that Vivitar could improve on an old design from the
1970's, right?  g  However, I should point out that, in the VS1
90/2.5 Macro, the internal zoom type mechanics which [also] alter
the element/group spacings as the lens is focused to maximize
optical performance over the entire focus range.  I do have to
admit that I don't know as much about the VS1 105/2.5 Macro's
internal details (although I did own one for a time), and I can't
say whether it does or does not have a more complex optical
design.  In a sense, the inconvenience of the 90/2.5's 1:1 adapter
might even be considered as an example of its own design complexity
- g.

 My 105mm Vivitar has performance sufficient for me to make 16x20
 inch prints from most of a full 35mm frame which compare favorably
 against similar prints made from medium format negatives.

I do have some scans of some macro test shots taken with the VS1
105/2.5 and the VS1 90/2.5 (and the AT-X 90/2.5, and the A 100/2.8,
and the A 100/4, and the A* 200/4, and...].  While I have never
blown any macro shots up to 16x20 (whew!), I have to say that all of
these lenses do perform both really quite well and surprisingly also
quite similarly.  Comparing the prints side-by-side, I can
occasionally find one lens may be just slightly better in one corner
than another lens in that corner, but then I can often find the
situation reversed in another corner (which probably shows more
about my technique than it probably does about anything else - g).

In any event, while I've recently put the scans of the VS1 and AT-X
90/2.5 twins on-line (with the URL's provided in another thread),
I suppose I should get them all on-line...]

Fred