Ah yes, there it is on page 307, one paragraph, hehe. Hey I don't know what to say, my renders take longer with gamma correction ON than they do with it OFF. I'm starting to wonder if there is a bug in the PC end that shows it is on when it is actually off? Or vice versa for the Mac. I mean we are getting the exact opposite results. This may warrant an email to Corel huh? Very strange...hmmmm. ;-) I wish some other Mac users would give this a shot and post their results so we can compare notes.