I remember the days when one adjusted the contrast and the brightness on a monitor to achieve the correct calibration (on Samsung monitors anyway or was it done in Photoshop?). Now, when I calibrate, I seem to only be adjusting the brightness levels only. I’ve owned versions 3, 4 & 5 of Spyder Pro but, to be honest, I really never fully understood the correct procedure for calibrating until I came across your tutorial. For example, I never shut off all lights before calibrating. I bought Spyder Pro for colour accuracy but I sometimes wonder if my brightness levels are too low. I adjust them to the indicated suggested target of 120 (I note you suggest a lower level), which result in my monitors to having a brightness level of 20. I’ve been using Dell monitors and just recently upgraded my current monitors to Dell U2413 models. In your experience, does a monitor brightness level of 20 seem reasonable?
