Why do macbooks brighten the screen when it’s brighter, and darken when it’s dark instead of the other way around?

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It just seems weird that the solution to try to use tech in the dark is “make the screen darker”. And the solution to using it in a brighter environment, isn’t to make it dark in order to avoid hurting your eyes by having something bright in a bright environment, but apparently it makes more sense to make it even brighter.

In: Biology

8 Answers

Anonymous 0 Comments

Being able to see the screen is about relative light level. In bright environments like outside or a well-lit office there’s a lot more glare and your eyes are adjusted for bright light, so the screen brightens to match your eyes and power through the glare.

Similarly in a dark room there will be far less glare to power through and your eyes will be dilated to accepts as much light as possible. If you turn the brightness all the way up and then turn on the screen you’ll blind yourself, just like looking at a light bulb as it turns on in a dark room or walking out of a dark theater into the sun. And once your eyes constrict to adapt to that high screen brightness you’ll be totally blind if you try to look around the dark room.

Just try it, darken the screen manually outside or brighten it in a dark room. I suspect you won’t have a great experience using the device. Most people certainly wouldn’t.

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