Re: [FCP-L] Best way to Matte White Screen

On 25.10.2009, at 15:07, Ed Dooley wrote:

> Hmm, and all these years I thought YUV, YCbCr and YPbPr white is, in
> fact,
> *all* the colors, just as in RGB, add red, green, and blue together,
> and
> you get...white

No. Technically, pure white is *the absence of color*. In other words,
you can't mix colors to create white. Therefore, white is the absence
of color in the strictest sense of the definition. But it's one of
those 'it's who you ask' things... and probably yet another otiose
tangent at this point. ;-)

> (unlike CMYK where you get black).

No. With *K* you get black. CMY mixed together give a very dark grey,
that's what the "K" is for, which is pure black (but also for the sake
of saving ink when printing). The "K" in CMYK stands for "key" since
in printing cyan, magenta, and yellow plates are "keyed" or aligned
with the black key plate.

- RK

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