So I was wondering, do most of you use auto brightness or not? I have always left it on and had the brightness set to 50%. By having it on, I guess it overrides the Britney's setting?
I use it on both my iPhone and iPad.
I have both devices set to about 60%.
If it is bright out when I unlock the brightness will increase to compensate.
If it is dark when I unlock the brightness will decrease.
If I walk into a dark area from outside the brightness will decrease not to blind you.
Works great for me.
I find it useless. Would rather have complete control.
note that the auto-brightness feature does NOT continuously adjust the screen brightness, as you might expect. it appears to only adjust the brightness based on the ambient light level just after waking from sleep/unlock.
if the ambient light level changes after the first few seconds the iPad is wakened, the screen brightness will not change again until the next sleep/wake cycle
if you don't think the auto brightness setting is doing anything, you can test it in a bright room by covering the ambient light sensor (it's located just above the front-facing camera) while your iPad is asleep, then awaken it (slide to unlock, if necessary). with sensor covered, the iPad will wake with a slightly dimmed screen. If instead you test it in a darkened room and wake the iPad with a flashlight pointed at the sensor, the screen backlight will be brighter than normal.