Review on Sigma 17-50mm f/2.8 EX DC OS HSM FLD Lens: Large Aperture Standard Zoom for Canon DSLR - International Version (No Warranty) by Aneta Krzyszto ᠌

When buying, I immediately specified the possibility of a return, tk. there is a lot of information on the net that each lens needs to be checked for front / back focus. The store itself does not do this. When testing, a large back focus was revealed at the short end - the focusing plane simply did not fall into the depth of field ! At 50mm, this problem was not observed. Those. when buying a zoom, in fact I received only a working fifty dollars. Finally made a return. It's a shame, because I liked the lens itself. It would cost 10-12 I would leave it for myself, despite the shortcomings. And so.