Reviews and Problems with Sigma 4.5mm F2.8 EX DC CIRCULAR FISHEYE HSM
Showing 1-1 of 1
Pause for thought
Paul Safford, Abes of Maine
9 December 2009
Summary: Image quality is superb, the contrast pleasantly surprised me. Even at f2.8 I do not see vignetting worth noting in the area of view - however, most of your image is of the barrel. I was surprised at how small the image circle, probably only 1/3 of the view finder is filled with the circle of view. I may yet return this because by the time you crop the image to get a print there isn't much resolution left to play with.
Pros: Clear Optics, Easy To Use, Firm Mount, Linear distortion, Strong Construction