#8. "RE: D800 & D4 shooters – hand holding shutter speeds" In response to In response to 6
On the D4, try setting menu item F16 to ISO. You then reach up and over for the red movie record button, hold it down, and rear dial to vary the ISO (and if using Auto-ISO it sets the base ISO). Much better than reaching that ISO button on the grip area of the D4.