You should be doing photo editing with a profiled display running at 100cd/m² in a controlled room if you really care about accuracy.If this is normal I guess I should be doing all photo editing with the computer plugged in with the power cord.
i dont understand why these kids have 2000 dollars computers
its pretty obvious, when unpluged the mac tried to conserve battery by dimming the screen automactically (u can manually change it of course, the keys to increase and decrease brightness is located on the top left beside the ESC key)
when pluged in, the screens getts brighter for better viewing as its pluged into a power source