Originally posted by Gaelen im not sure which exif program your talking about
ExposurePlot (former Focalplot)
ExposurePlot (former FocalPlot) is a new free utility that analyzes your usage of the focal length of your lenses (jpeg only), show charts for ISO, aperture and shutter speed.
The program scans the specified directories and generates distribution plots based on the EXIF data.
There is not much documentation. One thing to be aware of: for focal length it can use true focal length (which I use) or 35mm equivalent focal length (for people who still think this way). If your usage plot looks strange check this setting.