Re: gamma bewilderment wrt/ Argyll’s documentation
Re: gamma bewilderment wrt/ Argyll’s documentation
- Subject: Re: gamma bewilderment wrt/ Argyll’s documentation
- From: Ben Goren <email@hidden>
- Date: Tue, 29 Mar 2016 10:03:08 -0700
On Mar 29, 2016, at 9:05 AM, Uli Zappe <email@hidden> wrote:
> 3. Why should the user care about the TRC at all in a color managed environment?
For the same reason working spaces use gamma encoding: more efficient use of the bits.
(Incidentally, at least up until very recently, it was only select applications that were color-managed, leaving file browsers and the like unmanaged. So there was a very good and important case to be made for calibrating the display, typically by loading the display LUT, to the closest you could get to the output standard.)
Depending on the system, you might or might not have enough bits to display dark shadows without banding unless the data is gamma-encoded. This can be further compounded by how close the calibrated gamma is to the hardware response.
In practice...well, especially with Argyll, use the defaults. Don't fiddle knobs unless you know which knob you're fiddling and why.
If you're going to fiddle this particular knob, intelligent options include the gamma function of your favored working space; sRGB (which should be your working space unless you know better); and the display's native response.
Cheers,
b&
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