HDR sheds what are they you shout?, well according to Wikipedia it’s

In image processing, computer graphics, and photography, high dynamic range imaging (HDRI or just HDR) is a set of techniques that allows a greater dynamic range of luminances between light and dark areas of a scene than normal digital imaging techniques. The intention of HDRI is to accurately represent the wide range of intensity levels found in real scenes ranging from direct sunlight to shadows.

Last years Flickr shed competition winner was one!

But we have had some great ones on the flickr Shed group