2002.03.05 02:20 "16 bit LAB in TIFF - documentation update", by Chris Cox
This is the official update for 16 bit LAB data in TIFF files, part of the documentation update coming out with the Photoshop 7 SDK.
This covers the existing CIELab encoding and the new ICCLab encoding.
An RTF version of the documentation is attached. A formatted PDF (104K) can be found at http://www.chriscox.org/PhotoshopLABTIFF.pdf
(Sorry I had to put it on my own website, but Adobe's website team was going to take at least another 4 weeks)