Interesting lens. At aperture 1.2, it's pretty sharp, and if you cover it up, it's just incredibly sharp. On the open chromate, beautifully blurs the background, in the defocus zone there is almost no chromate. Pretty strong vignetting, well, the weight is 1 kg. For studio shooting, nothing else, but I donโt take it with me on the road. Replaces 55 f/1.8 at 1.2 in APS-C mode. I think to change to 35 1.4 GM, since the latter is 2 times lighter.