Review on Sigma 17 70Mm F2 8 4 Contemporary Macro by Chun Hee Kim ᠌

I bought it 4 years ago, the first copy turned out to be sharp, for 4 years not a single failure, it works (ugh 3 times) like clockwork. The picture gives a decent one, there is no front / back focus, XA within reasonable limits, it gives a color shift to red, and since the hsm motor focuses more slowly than Canon lenses. The focus ring does not dangle like cheap canons, so manual focusing on it is more pleasant, I appreciated this when the focusing system on the camera failed.