![]() Far sharper and with less CA than the last reviewer's. It seems I have a good copy or the last reviewer had a lesser copy. But the image quality on the lens more than makes up for any of its shortcomings.įish eye photography is fun and rewarding when used well, and for now this lens will fit the bill on a full frame camera. Its build quality is good, with strong plastic lined by Sigma's rather ordinary matte finish. This Sigma 15/2.8 is impressive with its colour contrast, its exquisite sharpness in both short and long distance focusing, reasonably (though not the best) good flare control, and its swift focusing response. In the meantime, I have this little beauty that has produced some stellar results, something I thought would not be seen having been spoilt by the DA 10-17 on all my previous APS-C cameras. For the fish eye effect, one has to resort to the legacy F 17-28 or the various A and M varieties of Pentax fish eye lenses suitable for full frame photography while we wait for the upcoming DFA version. There is (at the time of this review) no modern full frame fish eye lens option available from Pentax currently in production. This is an underrated lens in the full frame format. Sharpness: 9 Aberrations: 7 Bokeh: 8 Autofocus: 9 Handling: 9 Value: 8 New or Used: Used Camera Used: K-1 Mark II Not of the calibre of a Limited lens, some flare ![]() Sharp across the frame, small and light, quality build, wide FOV ![]() Mount Type: Pentax KAF3 (in-lens AF only) Additionally, the bright F2.8 maximum aperture benefits working in difficult and low-light conditions by allowing the use of faster shutter speeds. Its narrow minimum focusing distance allows for working with unique perspectives with close-up subjects. This lens produces a 180° angle of view diagonally on the 35mm full frame format, a bit less on APS-C. As a diagonal fisheye, this lens produces a notably distorted image that fills the entire frame. ![]()
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