Quote:
Originally Posted by Nightyume
The illumination on mine is almost perfect. My only complaint is that the lowest setting can flicker, pulsing between two intensities. If I turn up the brightness and then lower it to the minimum again it can fix this but doesn't always. I don't mind because I get the impression that to truly avoid this they would have to make the minimum brightness setting higher and I don't want that.
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I think you are right in your guess.
The frontlight probably uses LEDs and they can only be on or off. So the way to get more or less lighting is by varying the duty cycle (ie: percentage of time on compared to off).
The higher the frequency they do this at, the smoother it will be. If they frequency is low, then at low brightness levels, the dark period will be too long and depending on the frequency of ambient light may even cause a beat/strobe effect.