I am using a Fuji s7000 for photographing ringg. To get a macro image to show detail I need to be .5 inches from a ring. This causes shadows from the camera to be cast on the ring by the lighting which is unacceptable. I would like to be at least 8 inches and perhaps even further between the front of the camera lens and the ring to eliminate camera shadow but still keep the clarity, resolution, or whatever the precise term is. QUESTIONS: 1. Would a diopter lens added to the s7000 meet my needs? 2. What size diopter lens would meet my minimum requirements? 3. Is there a particular brand of diopter lens that is best? 4. I see on Ebay you can get 4 diopter lenses for about $50.00. Would that be the way to go? Thanks for your help.