Originally posted by thear I sold my Sigma 17-70mm lens due to vignetting when shooting wide.
Vignetting ??
My 17-70 suffer absolutely no vignetting, it does suffer slight distortion though (correctable in PP), perhaps you mean this ??
I agree with the OP that the 17-70 is an excellent lens, I particuarly like its contrast/colour rendition, pretty sharp too !!
I think some of the negative comments regarding the 17-70 are due to Sigmas Quality control, get a good copy and its an excellent lens - looking forward to the Pentax version to see if it can improve upon the Sigma, it's got a job on tis hands !! - it hopefully won't suffer the CA that some of the new lenses seem to.
simon