I just bought this lens and I am not getting very sharp pictures. I have tried setting the ss anywhere from 100-500 and the aperture anywhere from 1.4-3.2 Without getting too complicated what is the best way to determine if it is the lens, the user or the camera. While I'm able to get pretty sharp shots with my other lenses they still don't have quite the sharpness I see in others pictures and the 85 is even less sharp than my 17-55 and 70-200 (all nikon) I'm not sure how much is attributed to post processing when I see such sharp photos others on here take. Can someone suggest a fairly simple way to judge the lenses and camera? Also, I have heard of problems with CA with the 85 but I'm not sure it is supposed to be as bad as I am seeing. For instance I took a picture of my grandson wearing navy blue sweatpants with white print on the leg, in the picture the entire white was outlined in red. I really want to love this lens and it's easy to see that I would if I could just see some hope.