Quote:
Originally Posted by koncept
i was under the impression that instruments like high end's studio spots/washes used a cmy mix but did not use several "color flags" to create the desired color.
led's on the otherhadn could be an rgb mix correct? since in a par64 for example you could put clusters of rgb and use them all at different intensities to create the desired color.
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Most fixtures that have CMY mixing use some system of "flags" to mix the color. Many fixtures with CMY also have a fixed color wheel. The CMY flags are not always flag-like in shape. For instance, in the Martin Mac 600 each color in the CMY has it's own disc. The discs have a toothed (for lack of a better word) pattern of each color on them that goes from a wide spacing to full saturation. Some fixtures have flags that do indeed look like a flag, and "wave" in and out of the path of the light. And some fixtures use pairs of flags to vary the saturation of the color.
LEDs, as you said, do use RGB to color mix. The basic setup is clusters of LEDs, one in each color, or some pattern (of placement) through the fixture that has each color. We are also starting to see LED fixtures come with a fourth color, amber since that is a particularly hard color to mix via RGB. This type of RGB mixing is similar to the way an LCD TV or computer monitor presents color on the screen. Each pixel in the display contains a red, green, and blue sub-pixel that turn on to varying intensities to produce colors on the screen.