2003.02.26 08:46 "Behaviour of IFDs", by Kai-Uwe Behrmann

2003.02.26 19:56 "Re: Behaviour of IFDs", by Chris Cox

How are all the layers adjustments (visibility, color-mode, over-all opacity?...) pronounced in tiff?

They aren't in TIFF.

Belonging to this I hope to get some documentation about tag 34377: Photoshop. Would anybody recomend this tag?

The Photoshop data block is documented in the Photoshop SDK. The SDK is availble on the CD of Photoshop versions 6 and earlier, or directly from the Adobe developer's program for Photoshop 7 and later.