Digital cameras and MF lenses

patrickh · Joined: 23 Aug 2007 Posts: 3576 Location: Oregon

I am NOT looking to start a long time discussion of the benefits of digital or film.

In the Nikon world Bjorn Roerslett is a legendary "tester" of nikkors. He has found that some old nikkors behave better on digital than they did on film and vice versa. The ratings on his web site reflect those differences, since he has rated most of the lenses on film and then on digital. I cannot comment since I was Exakta/Oly in my film days.

Have any of you found similar changes and if so what are they?

patrickh
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Exakta: Topcon 100/2.8, 35/2.8
C/Y: Yashica 28/2.8, 50/1.7, 135/2.8
P6 : Mir 38 65/3.5, Biometar 80/2.8, Kaleinar 150/2.8, Sonnar 180/2.8

niblue · Posted: Sun Nov 04, 2007 4:15 pm Post subject:

Lots of lenses don't perform as well at the edges and corners as they do in the centre and any such lens will benefit from being used on a APS-C DSLR as the corners/edges aren't used.
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Steve

440roadrunner · Joined: 07 Aug 2007 Posts: 45

I'm certainly not even beginning to know much about optics, but I wonder if it's not more than that

The frequency (light wavelength) response of a sensor is completely different from film, and I wonder if that may account for some difference, in the same way that coated optics affect lenses

poilu · Joined: 26 Aug 2007 Posts: 3319 Location: Greece

Richard_D · Joined: 21 Oct 2007 Posts: 2396 Location: Faversham Kent UK

I find shots can get a little soft at f16 on digital compared with film but I rarely go that low.

Orio · Joined: 24 Feb 2007 Posts: 12540 Location: West Emilia

Bjorn Roerslett in his evaluation never refers to the crop format issue, rather speaks extensively of problems like CA and purple fringing, no doubt related to the famous "sensor bleed" issue, a problem that is -obviously- non-existent with film cameras.

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mfkita · Joined: 29 Jul 2007 Posts: 14

The 300/4.5 pre-AI Nikkor (the one with the fixed tripod socket collar) is ABSOLUTELY better than the 2.5 rating he gives it.
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Attila · Joined: 24 Feb 2007 Posts: 16065 Location: Budapest,Hungary

I guess story is same than 200mm f4 pre-ai that is also a nice lens really and on many forum people says not good at all. I love mine pretty much.
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