Inside Macintosh: Advanced Color Imaging on the Mac OS /

Appendix A - ColorSync Manager Backward Compatibility

ColorSync 1.0 Profile Support

The ColorSync Manager continues to support the use of ColorSync 1.0 profiles. Apple Computer strongly recommends that you use ColorSync 1.0 functions with ColorSync 1.0 profiles, if possible. For example, always use ColorSync 1.0 functions to match colors between the color gamuts of two devices if both devices have ColorSync 1.0 profiles.

However, there are times when you may need to use a ColorSync 1.0 profile with the ColorSync Manager. The ColorSync Manager's robust backward-compatibility support allows you to do this. For example, a document containing an image to be color matched may include an embedded ColorSync 1.0 source profile for the image. To match the colors of the source image to a device that has a version 2.x profile, you must use ColorSync Manager functions because ColorSync 1.0 functions cannot gain access to a version 2.x profile.

One of the main differences between ColorSync 1.0 and the ColorSync Manager is the profile format used. The ColorSync Manager accommodates ColorSync 1.0 profiles so that you can use them with it when you must. Before describing how to use a ColorSync 1.0 profile with the ColorSync Manager, this section explains the differences between the ColorSync 1.0 profile format and the version 2.x profile format defined by the International Color Consortium (ICC) and used by the ColorSync Manager.

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Subtopics

A - ColorSync 1.0 Profiles and Version 2.x Profiles

A - How ColorSync 1.0 Profiles and Version 2.x Profiles Differ

A - CMMs and Mixed Profiles

A - Converting a 2.x Profile to the 1.0 Format