2004.12.02 18:07 "[Tiff] Having problems adding IPTC to a TIFF", by Roland Rabien

2004.12.07 20:27 "Re: [Tiff] AdobeDeflate (was: Having problems adding IPTC to a TIFF)", by Chris Cox

Speaking of Photoshop, why was AdobeDeflate created?

Because someone outside Adobe defined a flate compression value and ignored the value defined by Adobe as part of the TIFF standard.

The non-Adobe flate compression value should be read, but never written. Use the Adobe flate compression value when writing.