Usually I am not so picky. I was just doing a family portrait here with a single person which is something I don't usually do. What looked good in my viewfinder, the image on the LCD screen the person looked like she was slightly leaning back a bit. So I had to tell the person to lean a bit forward. Lens used was a Nikon 85mm F1.8D taken with a white backdrop and prob something like 3m away from the person. Cheers.