On samedi 01 décembre 2007, Graeme Gill wrote: > Frédéric Mantegazza wrote: > > Well, There is something strange... I can't adjust the white point. > > Even if I increase Red and Blue to the max (I don't have Green gain > > control), I'm still far for the correct value (dE ~ 24). But the image > > looks hugly, and the temperature goes to 11500K! > > > > Adjust R,G & B gain to desired white point. Press space when done. > > Initial B 79.87, x 0.1974, y 0.3924, VDT 6733K DE 30.4 > > / Current B 120.85, x 0.1946, y 0.2525 VDT 11523K DE 23.5 R+ G-- B+ > > You need to sanity check it. Does the white of the display actually > look green ? If not, then there is some problem with the instrument > and readings. What instrument is it ? Yes, when using default 6500K white point, there is a little green color cast. But as soon as I load the LUT from the generated profile, using dispwin, the colors looks good: greys are greys. So, I think the instrument is OK. The problems occure when the color engine (all my softwares under Linux are based on LCMS) use the profile. I tried to profile my laptop LCD, and I got the same problem. I'm using the Eye-One Display 2. What happens if you use my profile ? Do you see this red saturation? Could it be better if I use a very large numbers of patchs (say 1000), and generate a table, instead of a matrix? -- Frédéric http://www.gbiloba.org