1994.09.16 17:43 "Re: TIFF ReferenceBlackWhite Field Versus Leffler's TIFF Software", by Sam Leffler
Page 86 of the TIFF 6.0 Specification says that the number of entries in the ReferenceBlackWhite field should be 6. However, the manual page for TIFFSetField says that there should be 2*SamplesPerPixel entries. What gives?
v3.3beta015 is beta software mainly 'cuz the documentation is out-of-date. The code is the reference and it uses "6".