[argyllcms] Re: Difficulty profiling new iMac

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Tue, 18 Sep 2007 07:13:03 +1000



$ profile -v -A Apple -M iMac -D "iMac 2007-09-13 small" -C
"Copyright (c) 2007 by Ben Goren" -i D65 -o Shaw iMac\ 2007-09-13\ small


Sorry to intrude into the main topic of this thread.
Ben I really like when you posts examples. It looks like you make a
profile for a monitor calibrated to 6500K. It was very interesting
when I saw you specified the D65 illuminant to the profle command. Is
just wonder if that is the right way to do it, or do you have specific
needs. I have newer done that, but I have only used argyll for three
years. :-)


It's not usual to use spectral information in profiling a display,
simply because there is no illuminant involved. The only reason
for doing so with a display is to choose an alternate observer.
So the "-i D65" above is actually not doing anything - it's being
ignored, only the "-o Shaw" is having any effect.

The display will have a 6500K white point only if it is
calibrated to be so (ie. using dispcal -T 6500).

Note also that 6500K != D65 white point, they are subtly different.

Graeme Gill.

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