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caspert79
Joined: 31 Oct 2010 Posts: 3225 Location: The Netherlands
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Posted: Tue Oct 08, 2024 4:30 pm Post subject: Minolta MD 35mm f/2.8 vs Mamiya-Sekor EF 35mm f/2.8 |
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caspert79 wrote:
Infinity test:
comparison by devoscasper, on Flickr
Conclusion: both lenses are very sharp in the center. The corners of the Minolta are better @ f/2.8, f/4 and f/5.6, @f/8 they are more or less equal.
@f/11, the Mamiya's corners look slightly better. |
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Lida
Joined: 13 May 2015 Posts: 9
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Posted: Tue Oct 08, 2024 6:38 pm Post subject: |
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Lida wrote:
Is the Minolta slighter wider too? |
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caspert79
Joined: 31 Oct 2010 Posts: 3225 Location: The Netherlands
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Posted: Tue Oct 08, 2024 6:54 pm Post subject: |
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caspert79 wrote:
Lida wrote: |
Is the Minolta slighter wider too? |
Yes, a little bit. |
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stevemark
Joined: 29 Apr 2011 Posts: 4086 Location: Switzerland
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Posted: Tue Oct 08, 2024 8:15 pm Post subject: |
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stevemark wrote:
That pretty much confirms my earlier test results:
https://forum.mflenses.com/userpix/20215/big_4216_artaphot_TEST_35mmf28_primes_1.jpg
https://forum.mflenses.com/test-nione-vintage-2-8-35mm-lenses-on-24-mp-ff-t82723.html
The third and last computation of the Minolta (late MC-X and all MD versions) is an excellent 2.8/35mm lens indeed.
Sadly I don't own the Nikkor AiS 2.8/35mm and the Canon nFD 2.8/35mm, but I suspect them to be on par with the Minolta MD 2.8/35mm!
S
EDIT: some "real life" samples taken with the Mamiya CS 2.8/35mm (which has the same optical computation and performance as the later Sekor EF 2.8/35mm):
https://forum.mflenses.com/mamiya-sekor-cs-and-sekor-ef-28-35mm-t84771.html _________________ www.artaphot.ch |
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Ernst Dinkla
Joined: 30 Nov 2016 Posts: 410
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Posted: Tue Oct 08, 2024 8:30 pm Post subject: |
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Ernst Dinkla wrote:
Caspert,
My best images with the M-S CS 35mm 2.8 are made at mid range distances but with 5.6 and then very detailed overall. Could be some field curvature that suited my scenes better but what you show here surprises me. I guess Mamiya's QC is showing its variation again. _________________ Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
March 2017 update, 750+ inkjet media white spectral plots |
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Ernst Dinkla
Joined: 30 Nov 2016 Posts: 410
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Posted: Tue Oct 08, 2024 8:31 pm Post subject: |
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Ernst Dinkla wrote:
Caspert,
My best images with the M-S CS 35mm 2.8 are made at mid range distances but with 5.6 and then very detailed overall. Could be some field curvature that suited my scenes better but what you show here surprises me. I guess Mamiya's QC is showing its variation again. _________________ Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
March 2017 update, 750+ inkjet media white spectral plots |
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caspert79
Joined: 31 Oct 2010 Posts: 3225 Location: The Netherlands
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Posted: Wed Oct 09, 2024 7:10 am Post subject: |
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caspert79 wrote:
Ernst Dinkla wrote: |
Caspert,
My best images with the M-S CS 35mm 2.8 are made at mid range distances but with 5.6 and then very detailed overall. Could be some field curvature that suited my scenes better but what you show here surprises me. I guess Mamiya's QC is showing its variation again. |
Honestly I think the Mamiya does a pretty good job in my test. @f/8 it is equal to the Minolta MDIII 35/2.8, which may be the best vintage 35/2.8 out there (in terms of sharpness accross the frame). Remember also, that this is done on a 42,4mp sensor; the corner crop is only about 0,8% of the total frame, and is the very extreme corner. @ f/8 and f/11 it is about perfect on this sensor. |
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Ernst Dinkla
Joined: 30 Nov 2016 Posts: 410
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Posted: Wed Oct 09, 2024 9:23 am Post subject: |
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Ernst Dinkla wrote:
caspert79 wrote: |
Ernst Dinkla wrote: |
Caspert,
My best images with the M-S CS 35mm 2.8 are made at mid range distances but with 5.6 and then very detailed overall. Could be some field curvature that suited my scenes better but what you show here surprises me. I guess Mamiya's QC is showing its variation again. |
Honestly I think the Mamiya does a pretty good job in my test. @f/8 it is equal to the Minolta MDIII 35/2.8, which may be the best vintage 35/2.8 out there (in terms of sharpness accross the frame). Remember also, that this is done on a 42,4mp sensor; the corner crop is only about 0,8% of the total frame, and is the very extreme corner. @ f/8 and f/11 it is about perfect on this sensor. |
Could you tell what the distance to the farmhouse is, that I could find a more or less identical scene?
Google maps can help to estimate the as the crow flies distance between spots. _________________ Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
March 2017 update, 750+ inkjet media white spectral plots |
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caspert79
Joined: 31 Oct 2010 Posts: 3225 Location: The Netherlands
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Posted: Wed Oct 09, 2024 9:36 am Post subject: |
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caspert79 wrote:
Ernst Dinkla wrote: |
caspert79 wrote: |
Ernst Dinkla wrote: |
Caspert,
My best images with the M-S CS 35mm 2.8 are made at mid range distances but with 5.6 and then very detailed overall. Could be some field curvature that suited my scenes better but what you show here surprises me. I guess Mamiya's QC is showing its variation again. |
Honestly I think the Mamiya does a pretty good job in my test. @f/8 it is equal to the Minolta MDIII 35/2.8, which may be the best vintage 35/2.8 out there (in terms of sharpness accross the frame). Remember also, that this is done on a 42,4mp sensor; the corner crop is only about 0,8% of the total frame, and is the very extreme corner. @ f/8 and f/11 it is about perfect on this sensor. |
Could you tell what the distance to the farmhouse is, that I could find a more or less identical scene?
Google maps can help to estimate the as the crow flies distance between spots. |
Yes. The distance is over 500 meters. |
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Ernst Dinkla
Joined: 30 Nov 2016 Posts: 410
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Posted: Wed Oct 09, 2024 9:44 am Post subject: |
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Ernst Dinkla wrote:
caspert79 wrote: |
Ernst Dinkla wrote: |
caspert79 wrote: |
Ernst Dinkla wrote: |
Caspert,
My best images with the M-S CS 35mm 2.8 are made at mid range distances but with 5.6 and then very detailed overall. Could be some field curvature that suited my scenes better but what you show here surprises me. I guess Mamiya's QC is showing its variation again. |
Honestly I think the Mamiya does a pretty good job in my test. @f/8 it is equal to the Minolta MDIII 35/2.8, which may be the best vintage 35/2.8 out there (in terms of sharpness accross the frame). Remember also, that this is done on a 42,4mp sensor; the corner crop is only about 0,8% of the total frame, and is the very extreme corner. @ f/8 and f/11 it is about perfect on this sensor. |
Could you tell what the distance to the farmhouse is, that I could find a more or less identical scene?
Google maps can help to estimate the as the crow flies distance between spots. |
Yes. The distance is over 500 meters. |
Well the church tower I have a free sight on is at 537 meter. With a bit of improvisation I could do something similar to what you did. South of my premises though so against the sun right now. Still have to find a better landscape scene one day. _________________ Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
March 2017 update, 750+ inkjet media white spectral plots |
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blotafton
Joined: 08 Aug 2013 Posts: 1636 Location: Sweden
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Posted: Wed Oct 09, 2024 12:12 pm Post subject: Re: Minolta MD 35mm f/2.8 vs Mamiya-Sekor EF 35mm f/2.8 |
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blotafton wrote:
Very interesting test thanks for posting!
I keep using my MDII for its great performance on both film and digital. |
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caspert79
Joined: 31 Oct 2010 Posts: 3225 Location: The Netherlands
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Posted: Wed Oct 09, 2024 1:21 pm Post subject: |
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caspert79 wrote:
Ernst Dinkla wrote: |
caspert79 wrote: |
Ernst Dinkla wrote: |
caspert79 wrote: |
Ernst Dinkla wrote: |
Caspert,
My best images with the M-S CS 35mm 2.8 are made at mid range distances but with 5.6 and then very detailed overall. Could be some field curvature that suited my scenes better but what you show here surprises me. I guess Mamiya's QC is showing its variation again. |
Honestly I think the Mamiya does a pretty good job in my test. @f/8 it is equal to the Minolta MDIII 35/2.8, which may be the best vintage 35/2.8 out there (in terms of sharpness accross the frame). Remember also, that this is done on a 42,4mp sensor; the corner crop is only about 0,8% of the total frame, and is the very extreme corner. @ f/8 and f/11 it is about perfect on this sensor. |
Could you tell what the distance to the farmhouse is, that I could find a more or less identical scene?
Google maps can help to estimate the as the crow flies distance between spots. |
Yes. The distance is over 500 meters. |
Well the church tower I have a free sight on is at 537 meter. With a bit of improvisation I could do something similar to what you did. South of my premises though so against the sun right now. Still have to find a better landscape scene one day. |
Can you post some images in full resolution you made before with the Mamiya lens? Just curious.
Note: the way I checked my aperture settings with this lens, is by comparing shutter times with the ones of the Minolta. As you probably know the aperture control of this lens is through the adapter, and not the original aperture ring. It is possible that they are slightly off. Half a stop difference in the far corners could be the difference between sharp and not so sharp. How do you check the aperture setting of your CS lens? There's no dedicated adapter on the market as far as I know. |
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Ernst Dinkla
Joined: 30 Nov 2016 Posts: 410
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Posted: Wed Oct 09, 2024 6:46 pm Post subject: |
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Ernst Dinkla wrote:
https://www.dpreview.com/forums/post/59981603
Some of the first takes with the lens.
The CS mount is converted to EF mount (+ EMF chip) for mounting on a Metabones IV adapter to a A7RII. Aperture mechanism somewhat changed by reversing a spring internally, aperture ring function is not changed. _________________ Met vriendelijke groet, Ernst
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm
March 2017 update, 750+ inkjet media white spectral plots |
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caspert79
Joined: 31 Oct 2010 Posts: 3225 Location: The Netherlands
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Posted: Wed Oct 09, 2024 7:23 pm Post subject: |
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caspert79 wrote:
Ernst Dinkla wrote: |
https://www.dpreview.com/forums/post/59981603
Some of the first takes with the lens.
The CS mount is converted to EF mount (+ EMF chip) for mounting on a Metabones IV adapter to a A7RII. Aperture mechanism somewhat changed by reversing a spring internally, aperture ring function is not changed. |
Those pictures look pretty good, but it's hard to compare them with shots @ infinity. Click for full size.
Here's a full infinity picture of the Mamiya @ f/8: test image Mamiya EF 35mm f/2.8 @ f/8 by devoscasper, on Flickr
I would say the results are pretty good overall. In very fine detailed object (such as trees @ infinity), deviations from absolute sharpness will be more apparent than closer by objects with less fine details. |
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caspert79
Joined: 31 Oct 2010 Posts: 3225 Location: The Netherlands
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Posted: Thu Oct 10, 2024 1:29 pm Post subject: |
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caspert79 wrote:
Two more comparisons:
Bloem28comparison by devoscasper, on Flickr
Wide open, at close distance, the Mamiya is not quite as sharp and contrasty as the Minolta.
Bloem56comparison by devoscasper, on Flickr
@f/5.6, I don't see much difference. Both images look very good. The Minolta has slightly more saturated colors. |
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