A combination of luminous output and
color temperature - either color corrected or by way of output than is the normal solution. This when added to
dimmer levels and
color temperature &
intensity of other fixtures about this "white light." A candle will perhaps not go too white when compared to a black setting but a
fluorescent lamp will be white when compared to this. On the other
hand a xenon follow spot will be intensely bright in comparison to that
fluorescent. This at least by way of
color temperature.
Put a
Fresnel with
top hat focused directly down with a similar
Fresnel washing the rest of the
stage. Turn the Fresnels up to full and spotted and tophatted downlight to 50% and it won't be bright in comparison. Reverse this and even if the same
color temperature range, that luminous focused output will be more white due to amber
shift and luminous output than the surroundings this without any
gel added.
This is a combination of focus of light by way of turning the
Fresnel to spot position & lessening the others in
wash mode by way of
intensity so they have amber
shift to lower both output and
color temperature.
There is a
base, after that,
color correction,
fixture choice, luminous
intensity and
color temperature all make the difference in what's percieved to be more white. 2,8K incandascent seems bright white in comparison to candles if candles is all one has to compare to. 3,2K
halogen is bright as compared to
incandescent.
etc.
etc.
etc.
Note there is even color corrected
PAR 64 lamps on the market that would go white light without needing
gel or a moving light or follow spot. The possibly discontinued GE/Thorn FGM & FGN series of
PAR 64 lamp is a very "
daylight deluxe" 5,200̊K in
color temperature, now thats' cool or white.