A few weeks ago when I was in Circuit City, I notice a 37mm close-up lens set from Tiffen. One lens was +7 power and the other +10. They can be used separate or screwed together. A UV filter could also be screwed on if wanted. Retail price is $19.99. The only thing I was concerned about was the direction of the lens and how it would have to be installed in a box. Has anybody tried anything like this? Maybe I'll get a set the next time I'm there and see what they do.