Posted: 2006-09-27T09:25:00-07:00
Looks like a bug in PerlMagick. You are getting the global quality setting rather than the one from the image. We will patch ImageMagick 6.2.9-8 Beta to fix this problem.
Use https://github.com/ImageMagick/ImageMagick/discussions instead.
https://imagemagick.com/discourse-server/
https://imagemagick.com/discourse-server/viewtopic.php?t=7500