all my (Samsung 971P) monitors get calibrated every quarter, so I don't experience any color / brightness shifts when I move an image over a monitor-boundary onto an other one. My monitors can rotate from portrait <=> landscape (manual, no motordrive :-) ) separately, so no-color-shift holds horizontally and vertically. That is: the image is dragged from one monitor in landscape setup to another in portrait setup, etc. and I do not accept any differences, even halfway. The desktop is expanded over all monitors.

The monitors are all 9 years old now, and are still performing fine. The have seen a lot of machines and cards and drivers over time.

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though