This is a shot from object lighting. Batteries are sitting on a black cloth about 3 feet from background which has overlapped gels for gradient effect. The gels are a little off center which is a bit annoying, but other than that I like the image. D1H 24-85 Nikor F11@1/60 ISO 200 Two speedotron strobes: one for main and other for BG.

This is a shot from my object lighting class. It's a bulb sitting on a plexi-glass sweep backlit with two 750 hot lights. I place a black card on either side to separate and outline. D1H F11@1/30 ISO 200