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LittleAlex
Joined: 27 Nov 2008
Posts: 1686
Location: L'vov (Western Ukraine)
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 Posted: Fri Sep 13, 2024 9:14 pm Post subject: Mamiya Sekor 645 C 35mm f3.5 |
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LittleAlex wrote:
I own first sample that lens quite long. But was unsatisfied with it. There is the story:
The new sample Mamiya Sekor 645 C N 35mm f3.5, which I obtained recently looks some better. However, also only quite bearable, and at the closed diaphragms.
There is photo at 11.0:
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stevemark
Joined: 29 Apr 2011
Posts: 3930
Location: Switzerland
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| Posted: Fri Sep 13, 2024 10:42 pm Post subject: Re: Mamiya Sekor 645 C 35mm f3.5 |
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stevemark wrote:
| LittleAlex wrote: |
I own first sample that lens quite long. But was unsatisfied with it. There is the story:
The new sample Mamiya Sekor 645 C N 35mm f3.5, which I obtained recently looks some better. However, also only quite bearable, and at the closed diaphragms.
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That's why Mamiya did release the Sekor D AF 4.5/28 mm ... The old computation was good enough for film, but not for high-res meduim format sensors. I've been testing the Sekor C 3.5/35mm using the Zörk Shift adapter and my A900 / A7RII cameras (resulting in 54 MP and 95 MP images, and a stitched Sensor size of 54 x 36mm respectively). The results weren't impressive; an A7RII plus Zeiss Loxia 2.8/21mm is much better.
S
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LittleAlex
Joined: 27 Nov 2008
Posts: 1686
Location: L'vov (Western Ukraine)
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| Posted: Sat Sep 14, 2024 1:53 am Post subject: Re: Mamiya Sekor 645 C 35mm f3.5 |
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LittleAlex wrote:
| stevemark wrote: |
That's why Mamiya did release the Sekor D AF 4.5/28 mm ...
S |
Well:
If you're using the XF or DF+ with a FF back, and IQ in the corners is important, the 35LS is a great piece of glass. On a 1.3X back, I think you could get away with one of the 28's.
https://www.getdpi.com/forum/index.php?threads/mamiya-28mm-f-4-5-d-vs-mamiya-schneider-28mm-ls-f-4-5.57718/
Well, my P25 back has the 1.1X factor
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stevemark
Joined: 29 Apr 2011
Posts: 3930
Location: Switzerland
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| Posted: Sat Sep 14, 2024 11:36 am Post subject: Re: Mamiya Sekor 645 C 35mm f3.5 |
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stevemark wrote:
That's marketing gibberish. The person writing the above was/is running the Phase One show room for Los Angeles. He certainly prefers to sell a 35LS since the Mamiya 4.5/28mm is discontinued.
The Mamiya 4.5/28mm was designed not only for 1.3x and 1.1x backs, but for film (1.0x) as well:
https://lens-db.com/mamiya-sekor-d-af-28mm-f45-aspherical-2007/
S
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LittleAlex
Joined: 27 Nov 2008
Posts: 1686
Location: L'vov (Western Ukraine)
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| Posted: Wed Sep 18, 2024 7:20 pm Post subject: |
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LittleAlex wrote:
Phase One 645 DF+ P25 back
f/11.0 15,0 s; ISO 400
Tripod
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LittleAlex
Joined: 27 Nov 2008
Posts: 1686
Location: L'vov (Western Ukraine)
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| Posted: Fri Sep 20, 2024 9:06 pm Post subject: |
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LittleAlex wrote:
Phase One 645 DF+ P25 back
F/5.6 1/30 с; ISO 200
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LittleAlex
Joined: 27 Nov 2008
Posts: 1686
Location: L'vov (Western Ukraine)
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| Posted: Fri Sep 20, 2024 9:23 pm Post subject: |
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LittleAlex wrote:
Phase One 645 DF+ P25 back
f/8.0 1/125 с; ISO 200
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