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Re: >4 channel profile confusion
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Re: >4 channel profile confusion

If I remember my history correctly, ColorSync supported multi-channel MCHx
profiles before the ICC spec documented them. Then when the ICC spec caught
up, it specified that the space types should be xCLR. This means that
ColorSync (and also the ColorSync PS Plug-ins) go to some extra effort
support both MCHx and xCLR profiles.

The contents of MCHx and xCLR profiles are the same so if you have an app
that only support one of the variants, then you can just change the space
type in the profile header.


David Hayward
ColorSync Engineering
email@hidden


> From: Steve Upton <email@hidden>
>
> In messing around with 5-and-greater channel profiles I have noticed
> something confusing and perhaps disturbing:
>
> ColorBlind-generated 6 channel profiles have "MCH6" as the
> designation for the device color space.
> ColorSync documents this as the encoding for the 6 channel color space
>
> *** the ICC Spec makes absolutely NO mention of MCH6 anywhere. 6
> Channel profiles are to be designated as 6CLR
>
> What am I missing here? Is ColorSync not in sync? Is there some
> allowance in the spec? This seems very odd!
>
>
> Regards,
>
> Steve Upton



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