Funny, I just finished shooting & looking at all my 28mm lenses on the A7R; then fired up FM and saw this thread.
The lenses I tested are:
Canon EF 28mm f2.8 IS
Canon FDn 28mm f2.8
Canon FDn 28mm f2
Contax G 28mm f2.8
Konica m-mount 28mm f2.8
Minolta CLE 28mm f2.8
Nikon AiS 28mm f2.8
Nikon AiS 28mm f2
Olympus OM 28mm f2.8
I shot a landscape at infinity from wide open to f8 at each intermediate f-stop with each lens.
My findings:
The best three, all pretty similar in performance, and all pretty good, were the Canon EF 28mm f2.8 IS, Contax Yashica Zeiss 28mm f2.8, and Olympus OM 28mm f2.8. On the Canon it performed better with the IS OFF at 1/125 sec.
I think highly of the FD lenses, but they performed so poorly in my test I plan to retest them with different adapters. I have to believe the adapter I was using let the lenses down.
The Nikon lenses were acceptable on the A7R, but not as good as the three above.
None of the rangefinder lenses performed acceptably in the edges & corners. Not even close.
Some overall thoughts.
I think it\'s very confusing trying to figure out what works and what doesn\'t because the A7 and the A7R probably give people quite different results with the same lens, and adapter variation also give people conflicting results.
Also, the A7R is ruthless at exposing any lenses weakness -- when you peer into the edges & corners of these 36 megapixel files at 100% very few lenses make you jump with joy. When do you find one that works really well, it\'s pretty amazing.
One last note -- I have and love the Ricoh GR and it\'s lens is definitely as good as it gets in 28mm equivalents. But the sensor is not in the same league as the A7R, especially above ISO 1600.
Jan 22, 2014 at 08:30 PM
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