Posted: 2006-02-23T10:18:45-07:00
Add -compress none to your command line. It appears there is a bug in the latest TIFF delegate library.
Convert, Edit, or Compose Bitmap Images
https://legacy.imagemagick.org/discourse-server/
https://legacy.imagemagick.org/discourse-server/viewtopic.php?f=3&t=5939