I assume you're talking about the backlight. I don't have hard numbers, but my experience says yes. However, it's not really in the same category. Developer's

I assume you're talking about the backlight. I don't have hard numbers, but my experience says yes. However, it's not really in the same category. Developer's can't directly control the screen brightness, and the device is essentially unusable when the screen is off (except for the case of playing music).