Strawberry dart frog

One of the beautiful frogs I have at my frog and reptile workshop is this ultra tiny (about 1/2 inch long) strawberry dart frog. In order to fill a significant part of the frame with the small subject, I had to use an extension tube in conjunction with the 50mm macro lens. That meant, of course, that depth of field was extremely shallow. To deal with that problem, I used f/32 -- which is the smallest aperture on the lens. A ring flash illuminated the frog. I like this type of light for macro work because it provides diffused light when the camera-subject distance is just a few inches. When a ring flash is used with a telephoto macro lens, the working distance is more like a two or three feet, and that means the flash approaches a point source of light. That means the lighting is more harsh. The next frog and reptile workshop will be January 14, 15. It is held in St. Louis. To arrive at the perfect exposure, I used manual exposure mode on the camera and ETTL (or iTTL for Nikon) automatic exposure mode on the flash.