Quote:
Originally Posted by Frogm4n
The low light levels are for using it in a dim/dark room. Having granularity at low levels is useful to make the text clear without being too bright and allowing your eyes to relax and not squint. Higher levels are for evening out the display if the ambient light isn't quite sufficient or is uneven. If you can still read the screen without the frontlight on then the ambient light is just right. LCDs like iPads have to use bright light to overcome ambient light, it's competition. Eink gets better with ambient light, it's complementary. People have gotten used to cranking up the brightness on LCDs just to see that the idea of turning it down for eink seems unintuitive.
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This is mostly true. I was designing an LCD industrial control panel with an EL backlight decades agoa. It was dim in the dark (automatic) but bright enough. It auto-brightened to a certain level and then turned off (ambient bright enough to read it easily).
My last Nokia (a slider in about 2007) was a transreflective LCD. You only needed the backlight indoors.
Often though people have the phone / tablet too bright indoors. Auto have never worked well for hand-held gear indoors as the light falling on the sensor can change too dramatically with slight movement. I've found auto to only be usable outdoors.