I have it on 1dX. The picture is perfect for portraits. Fast Compact. Very sharp all over the field and at full matrix. It shoots much better than it looks. I still have 85/1.2L. So, I do not immediately distinguish the picture from them. If someone has Fifty dollars unsharp or sharp from 5,6, etc., then you need to adjust, or a carcass or a Lens. I also had several 50 / 1.8, the picture is also not bad, but the quality is unstable, almost everyone has some kind of special “jamb”. This is not thSee full review