There's quite a bit of hidden information in pictures taken with your Digital Camera and Digi-Info will extract that info so you can view and save it.  Types of information include Camera make and model, Orientation, Resolution, Exposure Time, Date, Time, Shutter Speed, Aperture Value, Subject Distance, Metering Mode, Light Source, Flash on/off, Focal Length, Width, and Height, among others.  Works with most major cameras.