Well, Very sharp on open, moderately artistic bokeh, very accurate autofocus - it hits without a miss, which I did not expect from Sigma, even native Canon lenses cannot boast of such accuracy "from the factory" (maybe the fact is that the first batch is quality control more strict) which does not need to be treated, and slight chromatism, gr) also used to heavier glasses, the hood is just right for the topic: it' p=0