see http://www.imagemagick.org/Usage/formats/#png_formats
also -depth 8 >The 12 bits are indeed right shifted in their 16-bit representation. >What I wanted to do was to right shift the 12 bits into an 8-bit value >for use in an 8-bit PNG. > >In looking into this further in response to your response, I've >discovered that PNG does support 16-bit greyscale, but I don't want >that. I've tried some additional manoeuvres but without success, and I >haven't figured out how to tell IM whether to produce 8-bit or 16-bit >PNG. _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
