I am not a professional. Perfectly sat on the D800. Before him there were 28-300 and 50 1.4G. As soon as I bought it, I started comparing it with 50 1.4G, through the camera screen, and even got a little upset, because. I didn't see any difference at the same aperture. An hour later I looked at the pictures on the computer, and there was no limit to the delight! I wanted to rub my eyes. It's not a difference, it's an abyss! I sold all the glasses, I use only 24-70, and I don’t need anything else. The lens is a pleasure. I definitely recommend.