HDR - High Dynamic Range
HDR - High Dynamic Range - is a relatively new way of capturing
images with a contrast range well beyond the capability of film or
digital sensors. Early in the digital era, I learned how to shoot
with a wide range of exposure settings, then layer and mask them in
a way that may resemble HDR. There is an illustrated tutorial at Layers.
These exposures have been revisited with the Merge to HDR function
in Adobe Photoshop CS2 and Photomatix. Photomatix combines the exposures
into a 96-bit HDR image and uses tone mapping to reduce it to a workable
48-bit image. The 48-bit image is fine tuned in Photoshop and finally
reduced to a 24-bit JPEG for the web.