Monitor Luminance pattern
Monitor Luminance pattern
- Subject: Monitor Luminance pattern
- From: Roger Breton via colorsync-users <email@hidden>
- Date: Thu, 9 Jan 2020 22:11:02 -0500
In trying to separate "myths from facts". I've created a small application
to directly feed my monitor 16-bit/channel RGB values, from 0 all the way to
65536. The results is here :
https://1drv.ms/b/s!AkD78CVR1NBqkpYWyI61LO82SM-FVA?e=rPFvOe
In analyzing the result, I confess I'm no programming wiz or mathematician,
and I'm having a hard time separate what part of my display "pipeline" is
responsible for what. The graph shows measured Luminance values for RGB
levels in increments of 64 (0, 64, 128, 192, 256 ,,, 65536). It is clear
that the mapping is pretty linear in the darkest shadows and progressively
"deteriorates" (voluntarily?) as we move towards the highlights. In an ideal
world, we would want to enjoy 1:1 tone mapping "throughout", such that, if
we start with 16-bit/channel RGB photography, we get 16-bit mode in
Photoshop and we get 16bit/channel off the monitor through 16-bit/channel
video card. Maybe in a few years.
To summarize, 16-bit RGB -> Video Card -> which sends 10-bit to the monitor
> which passes this through 14-bit LUT.
/ Roger Breton
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