Full frame / 1.00x
No
50 mm.
50 mm.
1.00x
No
No / n.a.
Aperture
f/1.4
9
No
No
No
Focus
Yes
Yes
Direct
Yes
40 cm.
0.18x (35mm. equiv)
Build
No
13/8
1 asperical, 3 super low dispersion
77 mm.
No
Yes
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9.2/10
It is distinctly large, heavy and expensive for its type. However this is more than made up for by its fast silent autofocus, solid build quality, and absolutely outstanding optics. Overall it stakes a very serious claim to be the best autofocus 50 mm prime on the market right now.