photo:sigma50mm
Sigma 50mm f/1.4 DG HSM Art full frame lens
introduction
50mm f/1.4 full frame AF lens in various mounts (Canon EF, Nikon F, Sony Alpha, and Sigma SA mounts)
announced Jan 2014
optically the best 50mm lens under $2000
specs
50mm f/1.4 full frame AF lens
13 elements in 8 groups retrofocal design incl. 3 SLD glass elements and 1 ASPH
Super Multi-Layer Coating
9 rounded blades
77mm filter thread
HSM AF with full MF override
internal focus
close focus 0.4m
85mm x 100mm long
815 g (28.7 oz)
$US950
reviews
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just as sharp right in the center as the $4000 Zeiss 55mm ƒ/1.4 Otus, lens, while the Otus shows better sharpness in the corners
stop down to ƒ/2.8, the Zeiss 55mm and Sigma 50mm show very similar, very sharp and very flat blur characteristics
At ƒ/1.4 and on a full-frame camera, it pretty well blows all of the other 50mm lenses out of the water. The Canon 50/1.2L is pretty sharp in the center, but the corners are extremely soft. The Nikon 58/1.4 is less sharp in the center, and quite soft in other parts of the frame. The Sony 55/1.8 obviously doesn't get to ƒ/1.4 at all. The other lenses all improve at ƒ/2, but so does the Sigma 50mm, easily bettering all comers, at every point across the frame
1EV vignetting, almost immeasurable geometric distortion
less CA than the Canon 50mm f/1.2 but a little more than the Nikon or Sony
doesn't feel like the fastest AF in the world when racking all the way from minimum to infinity focus, which takes around one second
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much sharper edge to edge at up until f/8
much less CA and ghosting up to f/2 and less vignetting
3% wider field of view (Sigma is probably closer to 48.5mm)
much larger, heavier and seems to AF faster
bokeh more contrasty but rounder and less onion rings (Canon also clips the bokeh circles at f/1.2)
AF with the Canon required resorting to single AF and even then was tricky at f/1.2 but both were similar at f1.4
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photo/sigma50mm.txt · Last modified: 2018/06/21 21:34 by gary1