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04-27-2012, 09:16 AM   #151
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Damnit, why did I check out this thread!!!!!!!!!!!

04-27-2012, 06:17 PM   #152
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Picked up a ZK100/2 from forum member Andi today. Here's a first sample, handheld, on extension tubes:


Last edited by lytrytyr; 06-30-2012 at 11:44 AM.
05-15-2012, 01:04 PM   #153
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Distagon 28/2

Pentax K-5 ,Carl Zeiss Distagon T* 2/28 ZK 1/60s f/9.0 at 28.0mm iso80


Pentax K-5 ,Carl Zeiss Distagon T* 2/28 ZK 1/320s f/8.0 at 28.0mm iso80


Pentax K-5 ,Carl Zeiss Distagon T* 2/28 ZK 1/250s f/8.0 at 28.0mm iso80
05-16-2012, 08:42 AM   #154
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21, 2/25, and the macros are really worth considering. All other Zeiss lenses are just interesting because Pentax does not match the specs in their line up.
The SL-II series from Voigtländer stopped in house competition of the 125 macro to the 100 Macro Planar - too bad. With the Zeiss line-up expanding, I am wondering what Voigtländer has to show at photokina - SL-III?

The 1.8/135 Zeiss for Sony would be an interesting addition in ZK mount.


Last edited by zapp; 05-16-2012 at 08:48 AM.
10-04-2012, 01:03 PM   #155
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i own...

the following ZK lenses:
  • 18 f3.5
  • 50 f2 makro- awesome wide open!!
  • 85 f1.4- monstruous sharpness and resolution
  • and i would like to get the 100mm makro.. but hard to find!

thats it!
10-06-2012, 07:52 AM   #156
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My ZK friends

Here's one of the first images of my ZK85 wide open at 1.4 - yeah, she sat still. The flower was with the ZK35 at f2.8. All are straight from the camera (*ist DS).
While the 35mm is my most used lens now, I am looking forward to exploring the use of the newly acquired 85.
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10-07-2012, 06:57 PM   #157
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QuoteOriginally posted by subidoc Quote
Here's one of the first images of my ZK85 wide open at 1.4 - yeah, she sat still. The flower was with the ZK35 at f2.8. All are straight from the camera (*ist DS).
While the 35mm is my most used lens now, I am looking forward to exploring the use of the newly acquired 85.
I have the ZK 85/1.4 and I have a horrible time with it because of the focus shift inherent with this lens.

How did you manage to get a good shot at F1.4?
Did you have to fire 1000 before getting a good one?

JP
10-07-2012, 11:29 PM   #158
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QuoteOriginally posted by jpzk Quote
I have the ZK 85/1.4 and I have a horrible time with it because of the focus shift inherent with this lens.

How did you manage to get a good shot at F1.4?
Focus shift shouldn't be an issue
when you're focusing and exposing
at the same aperture.

10-08-2012, 06:12 AM   #159
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QuoteOriginally posted by lytrytyr Quote
Focus shift shouldn't be an issue
when you're focusing and exposing
at the same aperture.
I am not sure what you mean by focus shift in this case... Of note, I did not have any problems focusing with this lens at f/1.4. The reason I have this is to shoot at this aperture. I really don't do stop down focussing for the reasons I have heard in that the focus plan shifts. I presume this is what is called focus shift, but I may be wrong.

Using ZK lenses is quite an experience.... a learning one in that they seem a little different, just can't articulate it clearly, but just seem a little different. I am seeing little of the 35/f2 in this forum, and wonder if I should have gotten the 24 or 28mm instead. It never occured to me to explore the wider world, but I guess I should be on the lookout. The 35/f2 seems to live on the camera most of the time, and I shoot wide open almost all the time.
10-08-2012, 06:54 AM   #160
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QuoteOriginally posted by subidoc Quote
I am not sure what you mean by focus shift in this case... Of note, I did not have any problems focusing with this lens at f/1.4. The reason I have this is to shoot at this aperture. I really don't do stop down focussing for the reasons I have heard in that the focus plan shifts. I presume this is what is called focus shift, but I may be wrong.

Using ZK lenses is quite an experience.... a learning one in that they seem a little different, just can't articulate it clearly, but just seem a little different. I am seeing little of the 35/f2 in this forum, and wonder if I should have gotten the 24 or 28mm instead. It never occured to me to explore the wider world, but I guess I should be on the lookout. The 35/f2 seems to live on the camera most of the time, and I shoot wide open almost all the time.
I've got the 35/2 - it's as close to perfect as they come. The resolution and rendering is superb. It's sharper wide-open than the FA35 and most 35/1.4@f/2 (including Zeiss' 35/1.4 IIRC). Here's a recent snap of mine:

Zeiss 35/2 @ f/2
10-08-2012, 07:28 AM   #161
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QuoteOriginally posted by subidoc Quote
I am not sure what you mean by focus shift in this case. Of note, I did not have any problems focusing with this lens at f/1.4. The reason I have this is to shoot at this aperture. I really don't do stop down focussing for the reasons I have heard in that the focus plan shifts. I presume this is what is called focus shift.
Yes, that is correct.

QuoteOriginally posted by subidoc Quote
I am seeing little of the 35/f2 in this forum, and wonder if I should have gotten the 24 or 28mm instead. It never occured to me to explore the wider world, but I guess I should be on the lookout. The 35/f2 seems to live on the camera most of the time, and I shoot wide open almost all the time.
I have both the ZK 25/2.8 and ZK 35/2, and enjoy them both.
The ZK 35/2 is more straightforward, while the ZK 25/2.8 is quirkier.

The Zeiss shop still offers a ZK 25 and 28:
https://photo-shop.zeiss.com/en/Categories/Objektive/ZK
but they're getting hard to find now.
10-08-2012, 10:45 AM   #162
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QuoteOriginally posted by lytrytyr Quote
The Zeiss shop still offers a ZK 25 and 28:
https://photo-shop.zeiss.com/en/Categories/Objektive/ZK
but they're getting hard to find now.
What are you trying to do to me? Ruin me financially?? Now you have me looking.... again!

PS: what makes the ZK25 quirkier?
10-08-2012, 12:40 PM   #163
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QuoteOriginally posted by subidoc Quote
what makes the ZK25 quirkier?
The close focusing distance, 17cm from the sensor,
and the rather strong field curvature.
So despite the short MFD,
it's by no means a flat field macro lens.

However, the field curvature can be used to advantage,
either to throw the edges out of focus,
or to match a subject where the center
is further away than the edges,
like the sample I posted earlier in this thread,
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/36041-zeiss-zk...ml#post1901981
10-08-2012, 12:43 PM   #164
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QuoteOriginally posted by lytrytyr Quote
Focus shift shouldn't be an issue
when you're focusing and exposing
at the same aperture.
Pardon my ignorance, but what do you mean ??

I did buy this lens in order to shoot wide open at f1.4, so I use it that way: wid open, no stopping down.

JP
10-08-2012, 12:57 PM   #165
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QuoteOriginally posted by jpzk Quote
Pardon my ignorance, but what do you mean?
"Focus shift" as the way spherical aberrations
make the point of sharpest focus change
as you go down a stop or two from fully open,
even though the focus ring doesn't move.

That means that if the image looks sharp
(say on live view) at f/1.4,
it will no longer be sharp exposing at f/2 or f/2.8
unless you move the focus ring
a tad closer to the minimum focus distance.

Photozone has a good display of the effect on
Zeiss Planar T* 85mm f/1.4 ZF (ZE) (on Canon EOS) - Lab Test / Review - Analysis
. . . try and "Move the mouse cursor over the f-stop marks"
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