Conclusion: I've had this lens for several years. The images are soft at all apertures. There's a color cast. There's massive vignetting, though PIC removes it pretty well.
Cons: Semi-sharp images, color cast, intense vignetting
Conclusion: Images have a purple cast and are a little soft at all apertures. Save your money until you can buy the 17-40 instead, you'll get sharper images.
Great for outdoor and bright light, not so good inside
Kyle Biggs, Amazon
25 August 2012
Summary: I recently upgraded to a full frame camera and needed to replace my Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Canon Digital SLR Cameras (That lens is designed for APS-C
Summary: This is one of the first two lenses I bought when I switched to a Canon SLR about five years ago. I've had plenty of opportunity to use it since then, both with film and...
Excerpt: после юстировки фокусируется нормально но только если фокусировать по центральной точке, в центре резок края иногда мылит, в целом не плохое стекло для тех кому нужен
Pros: ширик, диафрагма 2.8? конструктив - внутренняя фокусировка, быстрая и бесшумная фокусировка, в любом режиме можно подкрутить фокус
Cons: при слабом освещение может долго ловить фокус, резок начиная с f/4 возможно только мой экземпляр