using the Optoma EP1080 for mirrordome

Trying out the Optoma projector with the mirror sourced from Bangalore, had some issues with colour calibration. The NVidia control panel on the Acer laptop as well as the OS X display control panel on JG's Macbook both mention turning the brightness and contrast all the way up - and they are meant for flat panels and CRTs, not projectors. Mentioning sites like this for calibration to Paul Bourke, he said just leaving everything at the defaults except the gamma setting can get 90% good results.