I like to flip through Metal Clay Artist Magazine -- despite never having worked in metal clay -- because I get some good ideas from it. The current issue (Vol. 2, Issue #2) has an extra goody, a long article on jewelry photography. It made me realize that depth of field might be the cause of my focus issues. The article's not just about the camera; it gets into jewelry placement, backgrounds and props, etc. It's worth checking out if a bookstore near you carries it.