auto brightness works great for me. I love it. But I am within a fairly small range overall so that is why I don't notice if it changes a bit up and down if I happen to lean into the light for example. It just makes it so that its always just perfect the way I like it. Its always between 9 and 11. I never go above that number. But it makes a big difference inside the house if I have it on 9 or 11 so I like that it changes as I need it.
It learned as I set it over a few days. Now I don't even touch the light anymore. Its just always at a setting where the page looks whitish, but does not glow. If I see the light, see the screen glow, I know its to high. That is how I taught it to learn my preference. I turned it down until the glow goes away. Did that all over the house and in bed at night and at some point the settings stuck. Now I can walk around the house and it just goes up and down a notch here and there. I just don't notice and the screen always looks the same.
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