Ken, I wonder if a CIECAM-kind of appearance model couldn't be used to predict the "contrast" effect? I wish I had concrete suggestions or documentation to share but, from memory, wasn't there the business of the "surround" as the stimulus immediately surrounding the field of view? I'm thinking out loud but I would suspect that, from an estimate of the "surround", in terms of Luminance or % of Luminance of the main viewing field, it's possible to predict the state of adaptation of the observer and therefore the role of the "white border" could be better explained that way. Sorry for not having dug into this further than this suggestion. Best / Roger -----Original Message----- From: colorsync-users-bounces+graxx=videotron.ca@lists.apple.com [mailto:colorsync-users-bounces+graxx=videotron.ca@lists.apple.com] On Behalf Of Ken Fleisher Sent: Tuesday, September 3, 2013 3:28 PM To: ColorSync Users Mailing List Subject: Soft Proofing with White Border It is recommended that when you soft proof an image on screen compared to a print on white paper (or predicting the print on white paper), that you have a minimum 1" white border surrounding the image on screen. Does anyone know of a good link to a (preferably) non-profit web site that explains in plain English why this is necessary? I need to supply a good reference for it and the link I had been using has gone dead. Thanks! Ken Fleisher _______________________________________________ Do not post admin requests to the list. They will be ignored. Colorsync-users mailing list (Colorsync-users@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/colorsync-users/graxx%40videotron.ca This email sent to graxx@videotron.ca