Excellent! Thank you very much. Would you expect a linear response from
my setup (Canon 70D/Canon 5D2+kino flo fluorescent lights)? I use
Capture One set to no color profile and a linear curve after-which I
output a 16bit TIFF.
On 8/31/2015 8:48 PM, Graeme Gill wrote:
Chad Johnson wrote:
I'm attempting to build a color profile of my camera and I'm not able to get aHi, the answer is that there was a bug in V1.5.1 in the colprof -am option -
result with v1.8.0. The last time I profiled my camera was with v1.5.1 and the
were good. The following is a simplified version of my workflow which I'm using
particular test. I executed everything exactly the same in both versions of the
scanin -v -dpin IMG_4147.tif ColorCheckerSG.cht ColorCheckerSG-xrite.cie
colprof -v -D"CanonEOS70D" -qh -am -u IMG_4147
even though "matrix only" is specified, the resulting profile has a curve,
and in new versions this bug is fixed, and you get a matrix only.
You can see all that in the verbose output and the fit errors.
Your data doesn't fit well to a matrix only - you don't appear to
have linear light (i.e. RAW) RGB from the camera.
To get a profile in V1.8 that is similar to what you were getting before,
use colprof -aG