Hello,
I'm a film student, so I guess it's really a novice question, but maybe you could help.
When I'm scouting my location, suppose I decided that I want to equalize lighting levels between inside and outside.
I determined that the difference between the lighting levels is X stops (4, for the example).
How can I determine the intensity of the light needed for the job?
Suppose I'm bringing an HMI light, how do I know whether 1.8 KW will do or do I need 2.5 or 4?
I suppose the distance at which the light will be placed should also be somehow taken into account, and also the diffusion I might want to use (but for those there's clear information about light loss etc.)
Same applies for other lights and situations of course, I'm looking for the metering system here.
Thanks in advance!