That's a marketing idea of monitor's manufacturers. There is no logic to have the monitor adapt itself throughout the day as ambient light changes. For critical color work, the ambient lighting should remain constant. Best / Roger -----Original Message----- From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of Jos van Riswick Sent: May-28-11 5:59 PM To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Continuous reading mode ambient light temperature is there some way to get argyll to continuously adapt my monitor's color temperature to the ambient light temperature, as the ambient light changes during the day? josvanr