It's a wonderful lens! I'm using it with a D7100 and - what I never intended - for portraits. I like it's extremly nice bokeh e.g. taking pictures of people when speaking in front of an audiance, myself (as a photo journalist) behind the speaker. Of course avaiable light, no Flash, at 2.8 or 2.0. Although the DXO messurements show a quite high vignetting at full aperture you will not observe this in such a motive. Congratulations to Zeiss!