Summary: If I could rate it as 0, I would do that. The product has defect. Right after the 30 days (within which I could return), the D4 is starting to give me some black pictures randomly. It seems like it will reset the settings randomly. I have contacted Amazon about this issue. They told me there is nothing they could do excepting giving me Nikon's phone number. Then I contacted Nikon. They ask me to submit the issue online. Then no answers till now.
Summary: My choice of the D4 was somewhat influenced by the spiel from the Nikon rep at last years BVE (broadcast Video Exhibition) I was taken in by the cameras ability to shoot full HD in full frame (FX) format. If they are at the show this year I'll be doing a bit of "ear-bending"!Nikon have got it hopelessly wrong in this 'department'! It turns-out the clips it creates at this setting are virtually un-useable in a professional video work-flow.