I have a fantasy film coming up that we'll be shooting entirely on stage, that will involve a fair amount of digital set extension (forests, mountains, shining dome structures) and background replacement via greenscreen (or bluescreen, haven't confirmed whether it'll be green or blue yet) and a pretty vibrant colour palette.
Our two options for camera are the Red One MX and Sony F5 (without a raw recorder, so 1080p 4:4:4 only).
I'll be lighting with tungsten almost exclusively (the lighting grid is mainly 5k fresnels and 2k soft lights), so I'm a little weary about the impact that will have on the shadows with the Red (most of the scenes will be pretty low-key).
However with the F5 we'd only get 10-bit 1080p 4:4:4 as apposed to 4K Redcode raw with the Red One.
So I'm wondering what people's leanings would be camera-wise?
I'd also really appreciate any thoughts or suggestions people have for using atmospherics (mainly haze) with greenscreen components? We really need haze for atmosphere - but we probably need clean keys more. I'd love to hear anyone's thoughts on the matter.