Hello there, Here is a sample of a picture I did this WE, I have updated the Firmware of the camera to the 22.214.171.124 because I heard about some bending problems on the 5D. It was shooten in JPG Large size, If you look on the background, on the dark Out of focus part of the picture, you can see clearly a strange noise problem with greens, and reds colors. I am not found of that , particularly for a 3,000$ camera...Is is normal?? here is a crop: and full resolution: http://raphael.lacoste.free.fr/thephotoforum/IMG_7097.JPG Are there some Canon users down here? do you think it is a normal issue with this condition of lighting ? thanks!