Point it to a directory and it will analyze what focal length, aperture, shutter speed, and ISO that you use.
http://www.cpr.demon.nl/prog_plotf.html
43% of the 5,700 pictures in the directory that I analyzed were taken at 37mm, which is as wide as the lens on my camera will go. And 42% were taken at F2.8, again, as wide open as it will go. I assumed that I mostly used the wide end, but I didn't realize that I did to such an extent.
http://www.cpr.demon.nl/prog_plotf.html
43% of the 5,700 pictures in the directory that I analyzed were taken at 37mm, which is as wide as the lens on my camera will go. And 42% were taken at F2.8, again, as wide open as it will go. I assumed that I mostly used the wide end, but I didn't realize that I did to such an extent.