<tt>Boudewijn Rempt wrote: > Does anyone know whether there is somewhere a free YCbCr icc profile for use > with lcms? If not -- how hard would it be to create one? We support YCbCr in > Krita but in a limited way due to the lack of a profile.</tt> The expectation with YCbCr is that, although it is used as the encoding for compression, when color management operations are performed the YCbCr is first rotated back into RGB form.  It is the RGB form that is color managed. When RGB is rotated into YCbCr and compressed for exchange -- the RGB profile should be attached so that the RGB can be managed correctly when the data is uncompressed.   Best regards, Ann McCarthy ICC Workflow WG Lexmark International, Inc.