HDR is High Dynamic Range photography. What is HDR photography?

 Cameras can’t see the range of light intensity that our eyes can, and monitors can’t display the range of light intensity that our eyes can see. This results in many photos having dark shadows and/or washed out skies that lack the vivid blue we saw.

 HDR photography is the process of taking several photographs of a scene at various exposure levels, then merging the images into one file, with a high range of light intensity. Each image contributes important information about the scene, such as details in the shadows or details in the sky. After merging the images, the next step in the process is to convert the file to a range that we can view and print. This second step is called tone mapping. Tone mapping compresses this high dynamic range image to a range that we can view on monitors and printers.

Thanks to Bob Lott, of the Chester County Camera Club, for his presentation and teaching of HDR imaging and Photomatix software.

Bob Lott's HDR course at the Chester County Art Association

This is a link to my HDR images of graffiti

Additional HDR images of graffiti