A macro lens is a must. It allows you to take really close up shots without using zoom. Most cameras won't focus well on objects within about 18". The macro closes that distance to almost nothing depending on the macro lens used. As for camera, Pretty much any type that will accept lenses will work. DSLR's are obviously made for that sort of thing, but you can get away with spending much less than that. I use a Kodak Z730, which is really just a point-and-shoot, but it has a lens adaptor that allows me to use a macro lens. My pics aren't the best in the world, but I can get some halfway decent close ups. One of the keys is lighting. A simple light box can be used to produce a good consistant light that eliminates shadows and discoloration.