Calling all colourists - Grade Panasonic GH4 4K ProRes next to Arri Alexa 2K ProRes In: Cameras Posted April 2, 2014 Sorry I did something wrong so I deleted this. I used compressor and exported the original footage with the Prores 4444 default and selected 1920x1080p for the size. Imported both this clip in FCPX and really stressed the footage. Can't tell a difference between the two. Hopefully I am doing something wrong.