HDR Attempt #1

That is really cool, I have never heard of this before. I really like taking pictures and had a lot of fun last year when I took a 35mm class at college. I have a Canon XTi but I really need to get photo shop so I can really finish up my pictures. Can you do this on other programs just by adjusting contrast and hue, or is it really something more than that? Also, any suggestions on where to get photo shop for a good deal or what edition is best?