1994.12.23 15:02 "Re: retreiving GrayResponseCurve and undefined tag info", by Niles Ritter
I also need to retreive 32 bytes of info at TAG 65535, which is undefined. I noticed that 'tiffdump' works, but it looks like 'tiffdump' does not use TIFFGetField().
Is the use of tag 65535 already in somebody's code? If not, it might be wise to reserve a private tag ID from Aldus, which avoids the danger of encountering images with incompatible tags of the same ID (65535 is a likely candidate for this hazard). Aldus allocates them in blocks of 5, and it only takes a day or two to get them.
I'm not sure who handles the TIFF tag registry now (it used to be Andy Commons) but you might try Steve.Carlsen@aldus.com for starters.