2008.07.09 17:02 "[Tiff] Problems with non-symmetric tiled images", by David Hoerl

2008.07.10 03:18 "Re: [Tiff] Problems with non-symmetric tiled images", by Graeme Gill

The, it occurred to me - it could be a problem with libtiff, and maybe Photoshop uses libtiff, so it could be that Apple's reader was properly designed. [Thinking that the use of non-symmetric tiles is probably not very common.]

You can be pretty sure that Photoshop does not use libtiff. Adobe tend to do all their owns stuff in Photoshop, and it's pretty evident from some of Chris Cox's comments that they are using their own code for TIFF as well.

Graeme Gill.