As I was out early this morning getting some shots from the last blast of fall foliage, I was trying to shoot the sunlight coming through a leaf hanging on a tree. There was a very slight breeze but it was just enough to make getting a sharp photo near impossible. When I got home I noticed lots of colorful leaves in my yard, so I decided to backlight them.
I picked up some nice leaves and placed them on a glass table on my deck. I pulled out a small, portable flash, put it on a little light stand and stuck it under the table. I had my 100mm macro lens on my camera so I added an extension tube so I could get even more magnified shots. With the camera on a tripod, I shot straight down on the leaves, set the flash on full power and let it blast through the leaves. I had to guess at exposure but after a few shots I figured it out.
I love the way the cell structure of the leaves comes through with the strong backlight. I was shooting at f/28, so on some shots I needed a five or 10 second exposure to get enough light on the top leaf.