I assumed most on this list were aware of such things. As we age or corneas yellow. This naturally serves as a yellow filter and affects our ability to see light of that wavelength. Our brains have an adjustment mechanism for this and indeed for light anomalies in general and, so to speak, turns up the gain on the filtered light to still give us white balance. .. these are our knobs like what you would find on an old school analog drum scanner to adjust for an unbalanced transparency. ..it's one of the most exciting parts of color science to me. Writing this from my phone but I'll see about writing more on this later. Cheers Daniel Perfect logic is meaningless without perfect perspective. Daniel Westcott daniel@westcott.us -------- Original message -------- From: Roger Breton <graxx@videotron.ca> Date: 07/27/2013 9:05 AM (GMT-07:00) To: colorsync-users@lists.apple.com Subject: RE: Color Perception: How does coffee affect color perception? Bob, This is an interesting suggestion. Would you have any links, by any chance? 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 Bob Frost Sent: Saturday, July 27, 2013 5:14 AM To: Mike Russell; colorsync-users@lists.apple.com Subject: Re: Color Perception: How does coffee affect color perception? Age affects color perception. By midlife, your color perception has started changing. Bob frost _______________________________________________ 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/daniel%40westcott.us This email sent to daniel@westcott.us