Summary: My copy for Canon cameras came with super stiff zoom ring, which is hard to swallow giving the price of the lens, not sure if this is a bad copy or just sub-par build
Summary: I desperately wanted to like this lens, since I currently can't afford a Nikon equivalent. Plus, the reviews were great, especially on SLRGEAR.COM.
Summary: Seemed like a great choice based on specs and price. The first copy was very sharp (sharper than my Canon 28mm F2.8 at 28mm and comparable to the Canon 50mm F1.8 at 50mm...
Summary: I use a Canon 60d. Had to return this lens. Auto focus did not work. Lens auto focus would keep searching(used in the middle of the day and outside).