2005.05.26 19:41 "Re: [Tiff] How to Write a tif file with compression =COMPRESSION_JPEG& photometric = PHOTOMETRIC_YCBCR ?", by Chris Cox
What does Microsoft Windows have to do with the TIFF specification? Could it be that other OSs do not really "prefer" RGB but use the arbitrary ordering "RGB" because that is the convention that CIE standards use?
It has to do with consistency -- if it's a multiple of a byte, then it is subject to byte order. (and no, only Microsoft really uses BGR, and some applications that were created on Windows and didn't know better)