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stevemark
Joined: 29 Apr 2011
Posts: 3926
Location: Switzerland
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 Posted: Sun Aug 25, 2024 2:19 pm Post subject: Pentax K 3.5/28 vs Zeiss CY 2.8/28 for landscapes |
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stevemark wrote:
As requested by kiddo, here's a quick comparison of the Pentax K 3.5/28mm vs the Zeiss Distagon CY 2.8/28mm.
It's a tough test since usually I don't recommend using vintage lenses on 50 MP FF cameras - but here you are:
AS USUAL PLEASE CLICK TWICE ON THE IMAGE OR DOWNLOAD IT TO GET THE FULL RESOLUTION!
I think the results speak for themselves. While the Zeiss is very well made (and a joy to use, due to its smooth focusing and well made aperture ring), it's optical performance is pretty much on par with other comparable contemporary 28mm lenses such as the Canon nFD 2.8/28mm, the Konica AR 3.5/28mm [7/7], the Minolta MC/MD 2.8/28mm [7/7], or the Nikkor Ai 2.8/28mm.
S
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caspert79
Joined: 31 Oct 2010
Posts: 3132
Location: The Netherlands
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| Posted: Sun Aug 25, 2024 2:27 pm Post subject: |
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caspert79 wrote:
Thanks for your test, very valuable! |
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kiddo
Joined: 29 Jun 2018
Posts: 1221
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| Posted: Sun Aug 25, 2024 2:41 pm Post subject: |
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kiddo wrote:
thanks for clarifying this , it´s impressive how well k version is dealing on high res sensor; if i recall, philipreeve did the test on 24mp sensor, but i assume that shouldn´t make so much difference. Is your zeiss lens the latest version? as i understand these ones should be somehow better than the earlier one. |
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 1161
Location: Winnipeg Canada
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| Posted: Sun Aug 25, 2024 4:55 pm Post subject: |
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Doc Sharptail wrote:
I think that a far more fair test would be to put the pentax up against the nikkor 28 f3.5 A/i, which has some sharpness improvement over the nikkor f2.8. In some cases, a fast lens does not always equate to image quality...
ETA:
I think this is the third mis-matched maximum apertures lenses test I've seen this week. Am I missing something, or is there some specific point to running such tests? Not trying to be mean or rude- I just don't get the point.
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon
Last edited by Doc Sharptail on Sun Aug 25, 2024 5:02 pm; edited 1 time in total |
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jamaeolus
Joined: 19 Mar 2014
Posts: 2963
Location: Eugene
Expire: 2015-08-20
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| Posted: Sun Aug 25, 2024 5:02 pm Post subject: |
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jamaeolus wrote:
I had a contax distagon 28mm 2.8. I sold it. I didn't do a side by side test like this, but my olympus OM 28 f2 and vivitar series 1 28mm 1.8 both just seemed better.
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stevemark
Joined: 29 Apr 2011
Posts: 3926
Location: Switzerland
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| Posted: Sun Aug 25, 2024 6:12 pm Post subject: |
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stevemark wrote:
| kiddo wrote: |
| thanks for clarifying this , it´s impressive how well k version is dealing on high res sensor; if i recall, philipreeve did the test on 24mp sensor, but i assume that shouldn´t make so much difference. Is your zeiss lens the latest version? as i understand these ones should be somehow better than the earlier one. |
I'm often a bit surprised about the differences seen between the same lens @ 24 MP vs @ 50 MP class sensors. I don't know whether there are different optical computations of the CY 2.8/28mm (I suspect not), but there may be differences when it come to coating. Certainly Zeiss themself has published only one Data Sheet / MTF for the CY distagon 2.8/28:
https://www.zeiss.com/content/dam/consumer-products/downloads/historical-products/photography/contax-yashica/en/datasheet-zeiss-distagon-2828-en.pdf
| Doc Sharptail wrote: |
I think this is the third mis-matched maximum apertures lenses test I've seen this week. Am I missing something, or is there some specific point to running such tests? Not trying to be mean or rude- I just don't get the point.
-D.S. |
I just was asked by kiddo whether the Pentax K 3.5/28 would be better than the Zeiss CY 2.8/28 - he owns the Zeiss and wants to know if getting a Pentax K would be meaningful. That said, among the Minolta 28mm lenses fo SR mount, the latest MD-III 2/28mm seems to be the best across the range. Sometimes comparing f2.0, f2.8 and f3.5 lenses side-by-side makes sense, especially if (as in this case) the f2.0 version is small and rather lightweight. And it even has floating focusing ...
S
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Doc Sharptail
Joined: 23 Nov 2020
Posts: 1161
Location: Winnipeg Canada
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| Posted: Sun Aug 25, 2024 6:24 pm Post subject: |
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Doc Sharptail wrote:
| stevemark wrote: |
| kiddo wrote: |
| thanks for clarifying this , it´s impressive how well k version is dealing on high res sensor; if i recall, philipreeve did the test on 24mp sensor, but i assume that shouldn´t make so much difference. Is your zeiss lens the latest version? as i understand these ones should be somehow better than the earlier one. |
I'm often a bit surprised about the differences seen between the same lens @ 24 MP vs @ 50 MP class sensors. I don't know whether there are different optical computations of the CY 2.8/28mm (I suspect not), but there may be differences when it come to coating. Certainly Zeiss themself has published only one Data Sheet / MTF for the CY distagon 2.8/28:
https://www.zeiss.com/content/dam/consumer-products/downloads/historical-products/photography/contax-yashica/en/datasheet-zeiss-distagon-2828-en.pdf
| Doc Sharptail wrote: |
I think this is the third mis-matched maximum apertures lenses test I've seen this week. Am I missing something, or is there some specific point to running such tests? Not trying to be mean or rude- I just don't get the point.
-D.S. |
I just was asked by kiddo whether the Pentax K 3.5/28 would be better than the Zeiss CY 2.8/28 - he owns the Zeiss and wants to know if getting a Pentax K would be meaningful. That said, among the Minolta 28mm lenses fo SR mount, the latest MD-III 2/28mm seems to be the best across the range. Sometimes comparing f2.0, f2.8 and f3.5 lenses side-by-side makes sense, especially if (as in this case) the f2.0 version is small and rather lightweight. And it even has floating focusing ...
S |
Thanks for the clarification. some of us don't have a clue.... 
-D.S.
_________________
D-810, F2, FTN.
35mm f2 O.C. nikkor
50 f2 H nikkor, 50 f 1.4 AI-s, 135 f3.5 Q,
50 f2 K nikkor 2x, 28-85mm f3.5-4.5 A/I-s, 35-105 3.5-4.5 A/I-s, 200mm f4 Micro A/I, partial list.
"Ain't no half-way" -S.R.V.
"Oh Yeah... Alright" -Paul Simon |
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kiddo
Joined: 29 Jun 2018
Posts: 1221
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| Posted: Sun Aug 25, 2024 11:12 pm Post subject: |
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kiddo wrote:
| stevemark wrote: |
| kiddo wrote: |
| thanks for clarifying this , it´s impressive how well k version is dealing on high res sensor; if i recall, philipreeve did the test on 24mp sensor, but i assume that shouldn´t make so much difference. Is your zeiss lens the latest version? as i understand these ones should be somehow better than the earlier one. |
I'm often a bit surprised about the differences seen between the same lens @ 24 MP vs @ 50 MP class sensors. I don't know whether there are different optical computations of the CY 2.8/28mm (I suspect not), but there may be differences when it come to coating. Certainly Zeiss themself has published only one Data Sheet / MTF for the CY distagon 2.8/28:
https://www.zeiss.com/content/dam/consumer-products/downloads/historical-products/photography/contax-yashica/en/datasheet-zeiss-distagon-2828-en.pdf
| Doc Sharptail wrote: |
I think this is the third mis-matched maximum apertures lenses test I've seen this week. Am I missing something, or is there some specific point to running such tests? Not trying to be mean or rude- I just don't get the point.
-D.S. |
I just was asked by kiddo whether the Pentax K 3.5/28 would be better than the Zeiss CY 2.8/28 - he owns the Zeiss and wants to know if getting a Pentax K would be meaningful. That said, among the Minolta 28mm lenses fo SR mount, the latest MD-III 2/28mm seems to be the best across the range. Sometimes comparing f2.0, f2.8 and f3.5 lenses side-by-side makes sense, especially if (as in this case) the f2.0 version is small and rather lightweight. And it even has floating focusing ...
S |
in size and weight, md minolta 28mm f2 it should be lighter, right? do you think this last md computation would give same result as pentax k 3.5? |
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Noritar
Joined: 25 Jul 2024
Posts: 20
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| Posted: Thu Aug 29, 2024 9:04 am Post subject: |
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Noritar wrote:
| jamaeolus wrote: |
| I had a contax distagon 28mm 2.8. I sold it. I didn't do a side by side test like this, but my olympus OM 28 f2 and vivitar series 1 28mm 1.8 both just seemed better. |
Do you have a favorite between the Zuiko and Vivitar? |
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BrianSVP
Joined: 09 Jun 2023
Posts: 335
Location: Philadelphia
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| Posted: Thu Aug 29, 2024 9:56 pm Post subject: |
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BrianSVP wrote:
Just jumping in here - I've had both but never at the same time, so I haven't been able to do a side-by-side either, but my impression was the Zuiko had deeper colors and sharper corners stopped down, while the Viv had better microcontrast and of course the very slightly wider max aperture (actually a 1.9). The Viv also tends to vividly colorful flares like crazy, which can be a good or a bad thing, depending on the situation. Both are plenty sharp at the center of the frame.
The Zuiko's probably the better all-arounder, but the Viv is a very fun lens, particularly if you like out-of-the-ordinary looks.
| Noritar wrote: |
| jamaeolus wrote: |
| I had a contax distagon 28mm 2.8. I sold it. I didn't do a side by side test like this, but my olympus OM 28 f2 and vivitar series 1 28mm 1.8 both just seemed better. |
Do you have a favorite between the Zuiko and Vivitar? |
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Noritar
Joined: 25 Jul 2024
Posts: 20
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| Posted: Fri Aug 30, 2024 2:37 am Post subject: |
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Noritar wrote:
| BrianSVP wrote: |
| but the Viv is a very fun |
Who doesn't love fun?
I haven't had either but I get the impression the Vivitar would be great for environmental portraits and general close up having fun pics. The unusual flare you mention could be interesting for video. Probably the Zuiko is the one to have, stopped down, on a tripod or for anything technical.
I want both, of course. But I don't buy Zuikos. I can't afford to open that financial can of worms. I already know which ones I want and I missed the boat. |
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jamaeolus
Joined: 19 Mar 2014
Posts: 2963
Location: Eugene
Expire: 2015-08-20
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| Posted: Fri Aug 30, 2024 4:29 am Post subject: |
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jamaeolus wrote:
They seem close optically. The edge might just go to the vivitar. But the oly is much smaller and lighter and I keep several other Oly's in my day to day bag. Simplifies adapter issues so it gets more use.
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photos are moments frozen in time |
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lumens pixel
Joined: 27 Feb 2019
Posts: 868
Expire: 2021-06-25
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| Posted: Fri Aug 30, 2024 8:27 am Post subject: |
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lumens pixel wrote:
A good contender for the Pentax could be the 5/5 Minolta 3,5 28. Nothing special at 3,5 but interesting afterwards.
Cheap and easy to find.
_________________
Lumens Pixel
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Minolta SR mount: 16 2,8; Sigma SuperWide 24 2,8; 28 2,5; 28 2,8; 28 3,5; 35 2,8; 45 2,0; 50 1,4; 50 1,7; 50 2,0; 58 1,4; 85 2,0; 100 2,5; 100 4 Macro; 135 3,5; 135 2,8; 200 4; RF 250 5,6; 24-35 3,5; 35-70 3,5; 75-150 4; 70-210 4
Canon FD mount: Tokina RMC 17 3,5; 28 2,8; 35 2,8; 50 1,8; 50 3,5 Macro; 55 1,2; 135 3,5; 135 2,5; 200 4,0; 300 5,6; 28-55 3,5 4,5; Tokina SZ-X SD 270; 70-150 4,5; 70-210 f4; 80-200 4L; Tokina SZ-X 845
Tamron Adaptall: 28-80 3,5-4,2 (27A); 70-210 3,8-4 (46A); 60-300 (23A); 90 2,5 (52B); 35-135 3,5-4,5 (40A)
Tamron SP: 20-40 2,7-3,5 (266D) |
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blotafton
Joined: 08 Aug 2013
Posts: 1616
Location: Sweden
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| Posted: Fri Aug 30, 2024 12:07 pm Post subject: |
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blotafton wrote:
I also have a Zuiko 28mm f2.8 and it's not very good on my Sony A7. On film there are no issues but on the Sony it has very bad edge performance. My Canon FD 28mm f/2.8 on the other hand is much better. |
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caspert79
Joined: 31 Oct 2010
Posts: 3132
Location: The Netherlands
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| Posted: Fri Aug 30, 2024 12:45 pm Post subject: |
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caspert79 wrote:
| blotafton wrote: |
| I also have a Zuiko 28mm f2.8 and it's not very good on my Sony A7. On film there are no issues but on the Sony it has very bad edge performance. My Canon FD 28mm f/2.8 on the other hand is much better. |
The Zuiko 28/3.5 has very good corner performance. |
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blotafton
Joined: 08 Aug 2013
Posts: 1616
Location: Sweden
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| Posted: Fri Aug 30, 2024 1:29 pm Post subject: |
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blotafton wrote:
| caspert79 wrote: |
| blotafton wrote: |
| I also have a Zuiko 28mm f2.8 and it's not very good on my Sony A7. On film there are no issues but on the Sony it has very bad edge performance. My Canon FD 28mm f/2.8 on the other hand is much better. |
The Zuiko 28/3.5 has very good corner performance. |
Yeah I saw your test and it seems to be pretty good.
I got the f2.8 version after seeing good film samples and didn't realize that it would be such a big difference on digital. |
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caspert79
Joined: 31 Oct 2010
Posts: 3132
Location: The Netherlands
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| Posted: Fri Aug 30, 2024 1:44 pm Post subject: |
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caspert79 wrote:
| blotafton wrote: |
| caspert79 wrote: |
| blotafton wrote: |
| I also have a Zuiko 28mm f2.8 and it's not very good on my Sony A7. On film there are no issues but on the Sony it has very bad edge performance. My Canon FD 28mm f/2.8 on the other hand is much better. |
The Zuiko 28/3.5 has very good corner performance. |
Yeah I saw your test and it seems to be pretty good.
I got the f2.8 version after seeing good film samples and didn't realize that it would be such a big difference on digital. |
Zuiko lenses are a mixed bag if you asked me. |
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BrianSVP
Joined: 09 Jun 2023
Posts: 335
Location: Philadelphia
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| Posted: Fri Aug 30, 2024 2:00 pm Post subject: |
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BrianSVP wrote:
Sensor stack thickness issue? Pretty common on the early Sony FF A7 range.
| blotafton wrote: |
| I also have a Zuiko 28mm f2.8 and it's not very good on my Sony A7. On film there are no issues but on the Sony it has very bad edge performance. My Canon FD 28mm f/2.8 on the other hand is much better. |
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blotafton
Joined: 08 Aug 2013
Posts: 1616
Location: Sweden
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| Posted: Fri Aug 30, 2024 6:19 pm Post subject: |
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blotafton wrote:
| BrianSVP wrote: |
Sensor stack thickness issue? Pretty common on the early Sony FF A7 range.
| blotafton wrote: |
| I also have a Zuiko 28mm f2.8 and it's not very good on my Sony A7. On film there are no issues but on the Sony it has very bad edge performance. My Canon FD 28mm f/2.8 on the other hand is much better. |
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Yes probably. More usually an issue with range finder lenses. |
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