Originally Posted by JP-pornshooter

nice shot Robert but i am afraid that girl will make up for almost any photographer flaws..
btw, you are doing the "light by northfacing window light"?

Higher ISO means you turn up the "gain" on the CCD, same as in video the photo comes to appear more grain and can loose a little "crispness".
modern digital slr cameras handle high ISO really well and shooters like Deano would never shoot at ISO800 unless he really felt confident this would produce a sharp and crisp shot.
i bet a few years ago Deans comfort zone was max ISO400 perhaps even less.