OFF TOPIC: 24-bit-per-pixel limit to Gdk RGB ?

["Joni Kahara" <joni kahara visi fi>]

> > The eye can distinguish 2000000 of colors, a display of 24 bits gives a
> > number of colors far beyond what we can see.
>
> The eye has much greater sensitivity for intensity differences -- there
> are built-in edge detectors in our eyes + we also have higher spatial
> sensitivity for intensity than for colours.  If the output medium was of a


I think that is incorrect. The eye is much more sensitive to
frequency (colour), than to intensity. An average (human) test
subject can distinguish between about two dozen different gray
levels (Gonzalez & Woods/2e).

Likewise, the ear is more sensitive to the pitch of a voice,
than to its amplitude.

??


    Jonk