Hi...I just bought a used 85mm 1.4 lens. I am a bit disappointed with the results, as this lens is supposed to be the crown jewel portrait lens. I shoot with a D300. I am not sure if my problem is the lens, the camera or me. Some of the images that I get, look great ...GREAT! But, the results are unreliable. I am getting soft focus on the eye, or an inaccurate focus a lot of the time. Does this lens lose center focus capabilities at 1.4? I have read that the D300 can calibrate individual lenses, but I don't know the first thing on how to do that, or if that is the answer. Here are 3 side by side images shot at 1.4. The focusing square told me that the eye (closest to the candycane)was sharp. These images are straight from the camera. RAW converted to JPEG. Should I return this lens? Any help would be appreciated!