"In his introduction to "Merge to HDR in Photoshop CS2" Michael
Reichmann does a great job of explaining dynamic range limitations
in photography and the ways to overcome them. Photomatix provides a
nice little FAQ about HDR imaging as well as a few dynamic range
"For Linux users, PFScalibration provides an implementation of a
method for the recovery of high dynamic range images from a set of
low dynamic range exposures such as the JPEG files produced by the
generally available digital cameras..."