Nikolay Pokhilchenko wrote:
Nikolay Pokhilchenko wrote:I confirm that generally XYZ-LUT profiles are tend to significant banding in real use. The banding is preventing the use of -ax key for display or camera profiling. The quality of such profiles is unacceptable (ArgyllCMS V1.0.4. I've didn't try -ax with latest versions). IMHO, much more smoothing is needed for XYZ data in the darks, may be in overall.
I am unable to reproduce your problem with V1.1.0 with -qm, -qh or -qu. I'm not sure why this would be though.
2. colprof -v -ax -qu vaio 4. cctiff -v -p -ir sRGB.icm -or vaio.icm TST.tif TST-ax.tif
Note that this is not guaranteed to get a smooth gamut mapping in any case, since it will use clipping. [Note that cctiff -o flag has changed purpose in V1.1.0 RC3]. The ideal way is: colprof -v -ax -s sRGB.icm vaio cctiff -v -p -ir sRGB.icm -ip vaio.icm TST.tif TST-ax.tif Graeme Gill.