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I recently played around with Mike Russell’s LabMeter image (www.curvemeister.com) and it is a neat way of showing a profile as a series of slices at selected L values. It shows very clearly for instance where on the L scale CMYK colours fall outside sRGB.
However, I noticed a disagreement between this and Colorthink in that LabMeter shows some colours from an OEM Epson 2200 profile (SemiGloss PK) as outside ProPhoto gamut – 90 -32 -32 was one, a light blue/mauve. Plotting the same profiles on Colourthink showed all the Epson colours comfortably inside the ProPhoto space.
Given that LabMeter simply works by using the Out of Gamut display, it appears that Photoshop and Colorthink are taking the same data and plotting different results.
PS’s OOG display also indicated that the inkject can print values of l00L which should be impossible, and clearly shows as such in Colourthink with the white point of the Epson profile being significantly lower than ProPhoto’s whitepoint, as you would expect.
Which is correct? PS or Colorthink?
——————–
Nick Rains
Australian Landscape Photographer
www.nickrains.com
However, I noticed a disagreement between this and Colorthink in that LabMeter shows some colours from an OEM Epson 2200 profile (SemiGloss PK) as outside ProPhoto gamut – 90 -32 -32 was one, a light blue/mauve. Plotting the same profiles on Colourthink showed all the Epson colours comfortably inside the ProPhoto space.
Given that LabMeter simply works by using the Out of Gamut display, it appears that Photoshop and Colorthink are taking the same data and plotting different results.
PS’s OOG display also indicated that the inkject can print values of l00L which should be impossible, and clearly shows as such in Colourthink with the white point of the Epson profile being significantly lower than ProPhoto’s whitepoint, as you would expect.
Which is correct? PS or Colorthink?
——————–
Nick Rains
Australian Landscape Photographer
www.nickrains.com
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