The Sigma 30mm arrived today, the first small-ish, standard prime for the Sony Nex series! The built quality is pretty good, the front element does not rotate and internal focus keeps the physical size of the lens constant. One thing I noticed immediately, internal rattle, lets call it Rattle Royale since I have never heard anything like that before in a lens. Once mounted, the rattle was gone. Obtaining auto focus in still mode produced a clicking sound generated by the aperture blades-comparable to the sound of death in a hard drive. AF speed was good but not exceptional. I really liked the AF behavior in video mode, super smooth without jumps and totally silent, almost human like. Samples with 100% crops after the break
The lens looks very well proportioned on the Nex 7, the wide manual focus ring has a nice feel to it, not as smooth as Carl Zeiss lenses, though good enough for manual focus pulls during video takes. Next thing I noticed was how sharp this lens is, maybe a side effect from those rattling lens elements? Just kidding. I am not a big fan of brick wall photos-unless I have a pretty girl in front of it :), however I never expected this little lens to perform at such a high level-reason enough for this quick test. It is nice to finally have a standard lens which clearly outperforms the kit lens at a killer price, a perfect match for the Nex 7!
Camera on a tripod, distance from the wall-approx 10 feet, WB 5600K, aperture priority, +_ 0, auto ISO.
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