I'm wondering if filming with a 4K camera, possibly downsizing to Full HD, will give better detail than filming with a Full HD camera (other parameters being equals).
Sub-question (maybe I should make it a different question?):
- I have some more experience and better equipement for photography (Canon 6D),
- I want my video camera to behave well in low light in moving environments,
- I'm often filming moving things/people, I don't want much bokeh/focus loss (I never really remember if that means more or less depth or field).
I currently own a Sony Cybershot RX-100 M2. Very unimpressive body size, but makes excellent 1920x1080x50p videos. I am thinking about an upgrade anyway, max budget for an outstanding camera would be 2000 EUR, but I am not sure if I want to put money in it right now since 4K market is still evolving fast, and so far I cannot really decide because other devices I got info about seem to be very similar or trade-off one advantage for another.
For example compared to Sony RX-100, Sony FDR-AX33 has a smaller sensor. Sony FDR-AX100 only opens at f/2.8 and I use for a wider aperture, so has far as I know RX-100 would have a better low light score than both those cameras. GH4 has more bokeh and seems kind of grainy in low light, ... and yet no camcorder in my budget has more than 30p with 4K.
Suggetions would be welcome, because I cannot really tell what would be a serious upgrade or just wasted money.