Hello to one and all; I am in a bit of a quandary. I have an 85/1.8AF which I like very much. I was thinking of upgrading to the D version for the distance info on my F5/SB-26 combination such that I could get the full benefits of 3D Multi Sensor Balanced Fill Flash. This being said, would the 105 or 135 DC lenses be a better upgrade for portraiture. I'm not sure how much usage the Defocus Control would get. These are expensive, but are they worth it? My portraits are of family and friends. I don't intend to use any of these commercially. Thanks in advance for any help. Owen " By concentrating on precision, one arrives at technique; But by concentrating on technique, one does not arrive at precision."