[argyllcms] Re: Displays with internal gamut emulation

  • From: RogerBreton <graxx@xxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Mon, 23 Aug 2010 23:38:15 -0400

I believe Argyll has a routine to calculate the difference between the
expected colorimetric result and the actual result. If the difference is
small, on average, then the profile is doing a good job. If the difference
is large, then, you know what that means. Personally, knowing that profiles
are at the mercy of instruments, I always compare with a display of the
ColorChecker chart, illuminated by my choice of "D50" lighting. If I find
the visual difference acceptable then I can trust the profile. Do you have
access to a ColorChecker chart yourself?

/ Roger

-----Original Message-----
From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx]
On Behalf Of adam k
Sent: August-23-10 11:04 PM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Re: Displays with internal gamut emulation

I wonder how much better this calibration is in comparison to Colormunki
with its software

Sent from iPhone

On Aug 21, 2010, at 8:52 PM, János, Tóth F. <janos666@xxxxxxxxxx> wrote:

> The "first" touch button is the first button above the power button, the
fifth button is the last one on the top.
>
> Not so scary, but of course, you shouldn't do it if you don't trust in
yourself.
> There should be no problem if you take a backup photo first.
>
> So, the fist button will be useless in the factory menu.
> The second one will be the ENTER
> The third and fourth will be the DOWN and UP The fifth will be useless 
> again on the blue window. But this will open this blue window again after
you used the EXIT to return the normal OSD.
> *** It may varies with firmware versions and may be my memory is
erroneous. But it is not hard to figure it out...
>
> So, the blue window will pop up after the tricky power up sequence.
> Navigate to the chosen preset mode (I already gave you a map) hit enter,
set the R with UP and DOWN buttons, hit enter again, set the G, hit enter
again, set the B, hit enter again. Carry on with the next preset.
> I suggest you to set everything to 255 as a "format"/"reset" first.
>
> Now, you may want to set the 6500K preset to ~6500K with instrument 
> support. Or not... it's your choice. I suggest you to leave them on 
> 255 and do a test calibration firs. If the result is good (you 
> achieved a relatively good contrast ration and natural gray scale -> 
> leave it there ; problems -> try to play with the Gains. I found them 
> useless with emulated modes and redundant with the Standard mode.)

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