[argyllcms] Re: Crushed shadow details

  • From: xun wang <xun911@xxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 13 Sep 2011 14:38:20 -0400

Just tried XYZ LUT with swapped matrix, it doesn't work well for me. get
subtle(but ugly) red & green banding in the dark area.

On Sun, Sep 11, 2011 at 1:13 PM, xun wang <xun911@xxxxxxxxx> wrote:

> Hi Graeme,
> yes I saw it when I was doing troubleshooting, but I didn't completely
> understand it when I read it. I've just re-read it and I think I understand
> it better now, this might fix the problem in a more fundamental way.
> Few questions:
> 1) My main display is Dell 3007wfp-hc, it's 92% adobe RGB, and I edit in
> Pro Photo RGB. For the source colorspace, should I be choosing Adobe RGB or
> Prophoto? I would assume it's Pro Photo Right?
> 2) there are 3 LUT based profile types in dispcalGUI, should I use the Lab
> LUT one?
> 3) using cLUT profile, do I still need to manually set the black level to
> see all the shadow details as I've done now for the matrix profile or can I
> use "native"?
> 4) are there any other real world advantage/disadvantage for display
> profile by using the cLUT profile type besides it contains more information
> and more flexible?
> thanks!
> On Sun, Sep 11, 2011 at 4:16 AM, Graeme Gill <graeme@xxxxxxxxxxxxx> wrote:
>> xun wang wrote:
>> > I'm not sure if there is a default black point for argyllcms.
>> Hi,
>> You have read this <http://www.argyllcms.com/doc/CrushedDisplyBlacks.html>,
>> haven't you ?
>> Graeme Gill.

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