>Many people say the D800 needs a higher >handheld shutter speed than other cameras. >You are going to have to explain this one to me.
OK. The reason is that - if you print or view at a larger size to take advantage of the additional pixels - any lack of sharpness due to camera movement will be magnified in proportion, and a higher shutter speed will help to mitigate any softness.
If, on the other hand, you only ever print the full image - whether the camera has 16MP or 35MP - at 6x4 (or even 15x12) , there is no need to use a faster shutter speed.