2004.06.07 07:56 "Re: [Tiff] How can I convert TIFF Raw G3 to TIFF G4 or bmp", by Kai-Uwe Behrmann
Did You test with display? Has many formats available.
<http://www.graphicsmagick.org/>
or simply the tiffcp utility from tiffutils
<http://www.remotesensing.org/libtiff/tools.html>
regards
Kai-Uwe