[argyllcms] Re: Monitor calibration
- From: adam k <aak1946@xxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Fri, 3 Feb 2012 19:13:55 -0500
Thank you!
I'll give it a try.
A Kielcz
On Feb 3, 2012, at 7:10 PM, "János, Tóth F." <janos666@xxxxxxxxxx> wrote:
> You can easily filter out some of them. For example:
> - a matrix profile isn't sufficient for displays with incorrect color mixture
> - Lab profiles won't work on wide color gamut displays
> - XYZ profiles are rarely the best choice for well behaving displays
>
> Start by measuring the default test chart of DispcalGUI for a "single
> gamma + matrix" profile (12 patches).
>
> In case you have relatively high errors during the profile validation
> (well above the random measurement error), try to create a Lab LUT
> profile from the very same ti3 file to check if the integer encoded
> Lab space segment is big enough for the gamut of your display (the log
> will indicate if it's not, look for warnings).
>
> Now try to create an Lab or an XYZ profile from more points.
>
> If the LUT profile isn't significantly better then restore the matrix
> profile (for better software compatibility and usually visually
> smoother gradients).
>
>
> The white point target is usually easy because it should match with
> the white point of your contents.
>
> As of the TRC: It's not a bad idea to calibrate for an L* target TRC
> if you plan to create a Lab LUT profile, just like you want to choose
> a pure-power gamma curve if you plan to create a gamma+matrix profile.
> But the TRC should also be close to the TRC of your contents.
>
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