I want to take pictures of objects/products (vases, pottery, other study materials, etc.), and i'm doing some research to figure out the best tools (lens) for this type of photography. I need to be able to take pictures of regular objects. What lens should I buy for my 350 D camera? Preferable a very good optical lens, no matter the price is (excluding L lenses). Any suggestions you can give would be great! Thank you!