70-210AF "D" or not is same mediocre lens - good in center at all apertures, only fair at edges unless stopped down - and is slow. Constant F4 version as AF, or in superior metal barrel E series version is good wide open and is a stop faster at long end. I have a couple of E 70-210's to sell, if interested (I avoid the AF versions since I don't like plastic, and AF is not suitable for my work [or much else, I think])- they are best of bunch for reasonable money in this focal-length area.