I have seen so many different examples. And when done right it looks amazing, but what exactly is the process? Sorry for the basic question, but it seems to be a series of exposures (obviously on tripod) and then a combining of the images. Is there a focus change in each shot or just an exposure change or both? How many shots should there really be? I have heard of up to 12 layers.. Is that so? Is there a specific F-stop to shoot at for best results? Is there a program just for HDR or does my Photshop CS 3 do it? I think thats all my questions. Let me know.