i don't know about you guys, but i've been watching this thread over on dp review about shooting at 8fps without the grip/en-el4 via a firmware hack. something about bracketing bursts and "single" release mode. i was curious, so i tried. did not work. however, this may be due to the firmware being 1.02 (later version..). from my findings, none of the firmware hack was needed. if you set your release mode to single frame, and are fast enough at the finger tips, you can shoot 8-9 frames in a second. no grip, no d2x batt. conclusion: be quick, or buy a grip.