this is very interesting, I normally shoot only RAW with my 50D, but am going to try the JPG with the high ISO NR turned on strong,, wondering though,, at what ISO does the NR start working? I can't find my book right now. I did a couple of test shots at 12,800 and seems to be a lot of color noise with that, but not really a lot of light where I tried it. I take a lot of deer and other wildlife outdoors, but sometimes there just isn't enought light early morn to get a decent shutter speed without a tripod, which is hard to use with a moving animal. Thanks,