Originally Posted by
anglefire
True HDR is when you take more than 1 image (Normally at least 3) but alter the exposure of each to be say 2stops over exposed, 2 stops under and the final image as metered.
You then combine the images inan editing program to create a 32bit image. Photoshop does do HDR, but arguably not as well as third party programs, such as Photomatrix. The resulting image is then tone mapped - that is the 32bit image is compressed to 16 or 8bits. The tone mapping is the bit that can make or break the final image - get it wrong and it looks dreadful - but get it right and they can look stunning!
Does this help any?
<div style="clear: both;"]</div>