Re: X-Rite Passport Inaccuracies
Re: X-Rite Passport Inaccuracies
- Subject: Re: X-Rite Passport Inaccuracies
- From: Eric Chan <email@hidden>
- Date: Sun, 22 Sep 2013 14:19:45 -0400
Andrew, there is no rendering intent involved in the L*a*b* color readouts.
The image pixel values are simply converted from (Linear) ProPhoto RGB to
L*a*b* using standard CIE conversion routines.
You may be thinking of doing conversions to other spaces (to another RGB
space), in which the rendering intent option is involved.
On Sun, Sep 22, 2013 at 1:23 PM, Andrew Rodney <email@hidden>wrote:
> > Lr 5 offers L*a*b* color readouts as an option. Right-click on the
> > histogram and choose "Show Lab Color Values" from the context popup menu.
> > The values are calculated with a D50 reference white.
>
> > Eric
>
> Is it using RelCol (like Photoshop) from the source RGB?
>
> I sure wish Photoshop provided Absolute Colorimetric like ColorThink.
>
> Andrew Rodney
> http://www.digitaldog.net/
> On Sep 22, 2013, at 9:27 AM, Eric Chan <email@hidden> wrote:
>
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