It seems that the lemon is a bit out of focus. I would also suggest (again) trying to experiment with colored backgrounds. Just place a red or orange cardboard behind the subject. You are good at macros. Keep it up.
18 Mar 2007 5:32am
@Streetlights: Thanks for your comment and suggestions. Actually, I've never used cardboards or anything like this so far, but I'll try. In "lime", the sun is shining through the fruit from behind. That's why the background is black.