that would be great but do you know if I can convert to Apple Pro Res 422 in iMovie? Can I neutralize color with a color picker / mcbeth chart in iMovie?
iMovies controls are very basic: there is a small whitepoint colour picker; export settings are all those available within QuickTime - including Apple Pro Res 422 - IF you have the codec installed. Appe ProRes is normally installed as part of Final Cut.
IMO if you want pro features, you need Final Cut Studio...but iMovie is simplicity.