Later this year I'm working on a couple of projects which involve heavy use of smoke and fog machines. Obviously this is no comparison but when I've shot smoke on a DSLR in the past I've had issues with 'grain' even in fully lit environments.
What I'm asking... is there a difference in how the Red or the Arri read fine detail like smoke, or will I ultimately have near similar results? Specifically my options are the Epic sensor and I believe the Alexa ST without the raw upgrade.