Quoted By:
Are these Sigma f/1.8 zooms really that bad at autofocusing? Every review seems to praise the general sharpness of the optics, but then they have to mention how photos will be randomly front-focused at times, back-focused at other times, and the lens ends up not being strongly recommended. I'm also not that thrilled by the more limited zoom range than the traditional 70-200mm f/2.8 lens or equivalent.