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Message: <blockquote data-quote="v30rider" data-source="post: 1850408" data-attributes="member: 71765">I had actually just gotten this afs 300 lens (only had it a few days) and wasn't that impressed with it. After I read your post, I did a lot of shots and looked closely at the focusing. At long focal lengths, it looked fine but at minimum focusing distance (which I hadn't really done much of up to that point), the focusing is noticably off.....I didn't really notice a problem at longer focal lengths but perhaps its just enough to take a bit of the the crispness off the photos, not sure.In any case, its gone back for exchange. I'll get the replacement in a few days and will let you know if the long end has improved or not.  Thanks for your input.....(by the way, I'm using a d90 and don't have the option to fine tune the lens).</blockquote>