I have read this camera does not do fill flash, but is that with the on camera flash, or with all flash units as well? I'd like to buy a SB700, but wonder if it will do fill flash or not on my camera. If not- I suspect I'd have to go to the 5000 or 7000 series cameras to get that feature? I do know the internal flash does not work with this, since I have tried it. Any word on a D7100 coming down the pike?