[argyllcms] Re: White Point
- From: Elle Stone <ellestone@xxxxxxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sun, 20 Sep 2015 19:33:44 -0400
On 09/20/2015 03:07 PM, Hening Bettermann wrote:
Hi!
I have created icc profiles with colprof and the CC Passport target. The
options used were -v -Zr -qh -aX -u. My understanding was that -u would allow
whites to be mapped outside the lightest patch of the target. But I find that
the target white patch is rendered as 100% white (255 in stead of 244). What am
I missing?
Best regards - Hening
That target doesn't have very many patches, not enough, it seems to me,
for a LUT profile ("-qh -aX").
I wrote up some considerations about what kind of camera input profile
to make for various purposes (critiques are very welcome!):
http://ninedegreesbelow.com/photography/camera-profiles-applied.html#lut-profiles-vs-matrix-profiles
Maybe try "-am", using the procedure in this article to fix the white
point?
http://ninedegreesbelow.com/photography/well-behaved-camera-profile.html
Best,
Elle
--
http://ninedegreesbelow.com
Color management and free/libre photography
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