[argyllcms] Re: CMP target reference data

  • From: Stephen T <stwebvanuatu@xxxxxxxxxxxx>
  • To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
  • Date: Wed, 14 Sep 2011 04:33:05 -0700 (PDT)

Well, I don't know.

It seems to me that several targets used for camera profiling (including 
expensive ones) are weak in greens and also do not extend much beyond AdobeRGB 
towards blue and red. Furthermore, the lightest and darkest patches are often 
far from L = 100 and L = 0 respectively.

Now, I don't think the Digital Target 4 is a great deal better. Can anyone send 
me the reference data so that I can check this? I don't care for mere opinions, 
I would rather trust a spectrometer and the computed reference data. That is 
what we profile against after all.


From: Graeme Gill <graeme@xxxxxxxxxxxxx>
To: argyllcms@xxxxxxxxxxxxx
Sent: Sunday, 11 September 2011 5:29 PM
Subject: [argyllcms] Re: CMP target reference data

Stephen T wrote:
> Can anyone supply or point me to reference data for the CMP digital target 4:
> http://www.cmp-color.fr/eng digital target.html

Fascinating that it is called "Digital Target 4", yet looks very similar 
(identical ?)
to the (confusingly named) "Digital Target - 3". Confusingly named because 
there was
a quite different "Digital TargeT 003". So was the name "Digital Target - 3" a 
or is the "Digital Target 4" actually different ?

Graeme Gill.

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