Oh wow!! I'm not a techy photographer but this camera is amazing! It arrived while I was in Florida so coming home was even more exciting! It has dual memory cards slots so I can choose to either have the images backed up as soon as I shoot them or to use them as 2 separate cards, so I don't have to stop shooting to change my cards as often. YIPPPEE!! It also allows you to shoot at CRAZY high ISOs!! The grain is lower at 6400 on the D3 than it was at 800 on my D200. Nikon has truly outdone themselves this time! I am so super excited to shoot Kelly Keeton's wedding in March (my first one this season). It is going to be in New Bern at a gorgeous church at 6pm, so it will be close to dark. Perfect for this new technology!