I was hoping that the Lollipop update would remedy this, but it actually seems to have made it worse. I have "Adaptive Brightness" off, and when I am in bright sunlight the screen actually dims. No, it is not an optical illusion, as when I moved into shade, after a few moments, the screen got significantly brighter. I tried living with "Adaptive Brightness" on, but the constant adjustments to the screen's brightness are really annoying. Are there any other settings in Lollipop that may fix this?