Loving the little cathode light…its giving me all kinds of new ideas. There is a really excellent downloadable PDF called Trick Photography by Photo Extremeist. If you are serious about painting with light, this is well worth the investment, especially because it saves you time on tracking down all the supplies and demonstrating the techniques. There are several other interesting topics covered.

Im probably going to have to order a few more cathode tubes. Canon 5DII , Canon 14mm 2.8 L II , f6.3, 10″, 400