Re: [Lcms-user] Changing the profile version of V2 profiles

[Richard H. <hug...@gm...>]

On 31 March 2013 13:50, Marti Maria <mar...@li...> wrote:
> the non-zero black point of V4 perceptual PCS, the reference gamut

Yes, that is what worries me.

> think it is not generally safe to include V2 tags in a V4 profile. It should
> be converted somehow.

Any ideas? I'd rather not get involved in the maths if I can avoid it.

> Regarding the use of proprietary tags, I would not do that because
> compatibility issues. If Photoshop does not read the profile, people would
> complain about the profile, not Photoshop (for example)

Well, we'd still include a 'desc' non-localised (en_US) version, we'd
just add a mluc of the cmsSigProfileDescriptionMLTag. Photoshop reads
the latter, and any Linux tools would only read the desc tag, which is
fine as well. I'm really erring on using cmsSigProfileDescriptionMLTag
and not changing the profile version just to avoid breaking things.

Richard