Hi Something I omitted from my first reply: you're producing targets optimised for the i1 Pro (which uses smaller patches), rather than the colormunki. This would increase your chances of mis-reading patches due to mistracking. Your printarg command line should be more like: printtarg -v -iCM -t360 -p A4 Mitsubishi-PG Hope this helps Derek _____ From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of tmwu Sent: 09 April 2011 07:36 To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] 2D view of icc's boundary is not smooth Hi: I used a colormunki to make a profile for my epson 3800, the paper is Mitsubishi Photo Glossy. I use the following setup: targen -v -d2 -G -f441 -g128 Mitsubishi-PG printtarg -v -ii1 -t360 -p A4 Mitsubishi-PG ...