Hi ... i'm shooting my first comercial with Phantom Gold, cause the Flex is not avaliable . Which real sensibility is the gold at 25 fps ? Cause a friend told me that running at 300 fps the camera doesn't even reach 50 ASA ..
And I never shot with a 20 Kw fresnell .. Do you know , aprox... , If I shoot at 600 fps, at which distance , should I put a 20k source without difussion?