Someone please educate me!


I went out shooting for a short while tonight and with the sun setting earlier and earlier, I really had to push the ISO. When I got home, I pretty much deleted every one of them. Could someone please tell me why ISO of 3200, 4000, 5000, 6400 is even an available option on the 7D? I can understand the wide range availble for shutter speed & f/stops but high ISO? Could someone give me a good scenerio where a shot would be worthy of this? I don't have PS but I can't believe there is a post-processing application that would be able to decrease the noise level & maintain a decent sharpness to still get a quality print level, except for maybe at 3200. Since I am a post-processing flunky, I most definitely could be wrong but I just can't imagine good prints @ ISO 6400, at least not from my 7d. Is ISO 6400 usable on a FF camera? Should I be getting more tolerable high ISO settings out of my 7D than I am possibly??


Denise