06-06-2013, 06:34 PM
Just curious about what happened when Canon switched from FD to EOS. In particular, I was wondering about the flange distance, where FD was 42mm compared to the 44mm of EOS. Did they say why that change was made?
44mm is still relatively short compared to other current full frame compatible DSLR mounts. Sony are at 44.5mm, Pentax at 45.5mm, and Nikon at 46.5mm (values may be rounded).
I have a converted FD 50mm f/1.2 and it is annoying that when used at distant focus, the mirror hits the lens rear! I have heard of some people shaving their mirrors, but the lens isn't worth it for me.
44mm is still relatively short compared to other current full frame compatible DSLR mounts. Sony are at 44.5mm, Pentax at 45.5mm, and Nikon at 46.5mm (values may be rounded).
I have a converted FD 50mm f/1.2 and it is annoying that when used at distant focus, the mirror hits the lens rear! I have heard of some people shaving their mirrors, but the lens isn't worth it for me.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.