Luminance Formulae and Red Distortion

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i'm working on chart displays , names couple hundred color swatches.  have of color data in table, , want arrange them hue , lightness, applied rec.709 coefficients data.  arranges colors natural gradient--except reds, have glaring missplacement.  idea why .709 coefficients this, or coefficients should use instead?

your observation correct, here in chapter 7:

 

http://www.fho-emden.de/~hoffmann/gray10012001.pdf

 

it's helmholtz-kohlrausch effect/phenomenon.

 

the effect taken account in mark fairchild's

color appearance models.

http://www.google.de/search?hl=de&as_q=fairchild&as_epq=color+appearance&as_oq=&as_eq=&as_ nlo=&as_nhi=&lr=&cr=&as_qdr=all&as_sitesearch=&as_occt=any&safe=images&as_filetype=&as_rig hts=

 

using lab (cielab) or munsell wouldn't improve

situation, in opinion. me, saturated red/orange

appears brighter gray or blue in planes of constant

lightness (lab) or value (munsell).

http://www.fho-emden.de/~hoffmann/cielab03022003.pdf

http://www.fho-emden.de/~hoffmann/munsell15052009.pdf

 

best regards --gernot hoffmann



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