According to wikipedia (insert appropriate disclaimer here):
> It has been suggested that women who are carriers for variant cone pigments > may be born as full tetrachromats, having four different simultaneously > functioning kinds of cones to pick up different colors.[1] However, this has > not been comfirmed by experiments yet. Variation in cone pigment genes is > widespread in most human populations, but the most prevalent and pronounced > tetrachromacy would derive from female carriers of major red-green pigment > anomalies, usually classed as forms of "color blindness" (protanomaly or > deuteranomaly). The biological basis for this phenomenon is X-inactivation. [EMAIL PROTECTED] wrote: > Cory Papenfuss wrote: > > >>- XYZ colorspace does not represent all colors... just all the colors > > that > >>people can see. > > > It's the CIE Lab colorspace that represents the gamut of (normal) human > vision. > > Trivia: Approximately 1% of women have tetrachromatic color vision - > that is, four different types of cone cells in their retinas - and can > see a vastly broader gamut than normal people. Exactly 0% of men have > this ability; you need two X chromasomes to get it. > > -- Someone handed me a picture and said, "This is a picture of me when I was younger." Every picture of you is when you were younger. "...Here's a picture of me when I'm older." Where'd you get that camera man? - Mitch Hedberg -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
