[lloeki]

flux&al adjust colour temp, but be very kind on the backlight any time of the day. Some screens are so stupidly bright it's like staring at a bright bulb all day long. If at all possible use a screen that adjusts backlight automatically according to ambient light. And no, you really don't need that much brightness, just don't turn it all the way down either!

[Bartweiss]

Do you know any good automatic-adjustment add-ons? I'd like to use the OS X option, but it seems to automatically adjust to ~2 notches above what I want. So something to use the same relative changes, but a lower absolute brightness, would be perfect. Right now I just do it by hand.

[woobar]

I think OS X built-in setting work just like that. I.e. turn on automatic brightness, then move slider to make screen dimmer.

I've just tried making the screen really dim, then pointed flashlight onto light sensor. The screen went super bright, but after turning flashlight off it got back to my dim setting.

[anc84]

Redshift does not only set color temperature, but also screen brightness and gamma.