rfdesigner said:
How about something like colour matching with RGB LED and colour sensor or even using the camera to learn the lighting colour.
Then when mixing flash and ambient light you can always hit bang on colour balance automatically without having to muck about with gels.
Could you not also do video or stills with the same unit if going for LED?
There are no doubt technical issues which would accompany such a design, but the concept is brilliant. I'm far from an expert in this field, but I would think that maximum output power would suffer with an RGB LED array in place of the light tube in a conventional flash design, and I also wonder if an LED can cycle full power on/off in the same nearly instantaneous durations of conventional flash.
Are there already steady-illumination RGB LED on-camera lights for video applications? I've seen the all-white ones, with / without attachable color filters.