I don't understand how these work. Both my Macbook and my iPod Touch use ambient light sensors to auto-adjust the brightness of their respective screens. But they seem to make the screen brighter in dark conditions and dimmer in bright conditions. Shouldn't it be the other way around? When I have these sensors turned on the image looks dull and washed out in well lit rooms but uncomfortably bright in dark rooms. Surely the display needs to be brighter in well lit conditions so it can compete with the ambient light. Am I missing something?