Fast Lenses on R-D1

Most of the asph Leica lenses I've tested have focused correctly with my R-D1. That includes: 21/2.8, 28/2.0, 35/1.4, 35/2.0, 50/1.4. The Noctilux can be focused by the R-D1 but it's tricky. The 75/1.4 cannot be reliably focused by my copy.

Sean
 
Sean and listers,
It is noteworthy that modern fast lenses perform as well as or even better than slower ones at the same apertures. I am just curious because I have a different impression on film. For instance, Color Skopar 28, 35, 50mm have image quality which is hard to fault on film but somewhat dull on R-D1. Cosina say that fast lenses tend to give good results on R-D1, which may not be compatible with those on film. I wonder if faster lenses are more telecentric. But this is not an issue only in the outer zones. Any ideas why?

Cheers,

MIKIRO
Japan
 
Hi Mikiro,

It's an interesting question but I'm afraid that I don't have any answers to it. For me, finding the answers would have to begin with tests of the same lenses on both the R-D1 and a film body. Perhaps someone else has made that comparison.

Cheers,

Sean
 
Hi, Sean.
Thanks for your response. Hopefully some experts on the list will be interested in this issue and do some digital/film tests.

Hi, LCT.
Thanks for your suggestion. I agree that grains are one of the key factors here.

Cheers,

MIKIRO
Japan
 
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