Re: [DCP-o-matic] XYZ image sequence colour problems

BTW - I usually recommend not to order any ‚preconverted‘ intermediate directly targeted at DCP conversion. I understand some people may feel that color transform is a complicated art and thus want to have this done by ‚qualified professional people‘ instead leaving it to ‚free software‘. However, DCP/DCI is a very closed environment, as is XYZ/2.6. So it’s better to do all the conversion within the step for DCP creation, and only request intermediates that are usable universally, e.g. RGB-TIFF, dpx, etc. Without proper explanation what they did, these XYZs are unusable, even if you try to fix them visually, you can never be sure if you really got it right, as the transform has multiple parameters. And feeling unsafe is not worth the money you probably spent there. Yes, in principle of course you can trust a reputable post house, but then, communication about a specific color conversion can be complicated (is the gamma conversion applied as well?), and wether it’s an error on their side or a misunderstanding... So, either order the full DCP from the post house, or, have them provide assets that are in generic form, so you can use them for multiple purposes, and so that DOM has a well defined point of departure. Yes, in theory, TIFF/XYZ could be as common and well defined as TIFF, but in practice... - Carsten