I try to always think "possible future prop." and have been saving those bottle caps for a while.I used a piece of black felt flat on the floor, mounted my SONY Alpha 77 II on a Vanguard Alta Pro 264 tripod and tilted it at about 90 degrees. I set the ISO at 400, aperture at 4.5 with a correction of -1.7. No flash, Side light by west window covered with white felt and overhead light from a regular chandelier. Lense is a Tamron 18-270 and was on 30mm ( 45 full frame equiv.) switched to manual focus. Minimal editing with Paint to get rid of the the liitle specks of dust showing on the black felt !!! By Daniel Reynaud.