I own a P3P and new to 4K. I have no way to output 4K video. I just love pixels. I've read some reviews and comments (elsewhere, maybe not here) regarding the inability of the Z3 and Hero4K to process that many pixels, obviously very fast, before the info gets to the mSDHC card and therefore unable to provide a true 4K output. I've read graininess particularly when flying over grass and trees. In other words, the suggestion is that the CCD can handle the input but the hardware can't sufficiently handle all those pixels before getting to the card. So .. here I'm reading all these wonderful posts about what appears to be many people happy and content that they are capturing full 4K in all its intended glory. Comments?