Dayton Paiva
This is my second SIGMA lens in 3+ years that has stopped working on me. My 17-50mm was getting harder to focus and noticed that the glass was grinding inside. So I bought a SIGMA 10-20mm just under a year ago and it s aperture is stuck on 00 & auto focus doesnt work. I dont think that is very fair. My old analog Pentax is still kicking from the 70s. Guess Ill stop using SIGMA and go straight to the source; hello Canon. Any suggestions on returns of a lens before the year is up?