Somewhat lamely, this is the only slide I had in about lighting. I left it up while I talked about the most important points, which are: Don’t use a flash unless you absolutely have to. If you can swing it, the common convention is to have specimens illuminated from the upper left.* If you have the time, it’s not a bad idea to bracket your Goldilocks shot with brighter and darker photos, by fiddling with your camera settings.