Quote:
Originally Posted by Nyssa
Reading an LED screen in the dark of night is still a "strain" with the light constantly in your face. With an e-ink device you can position yourself where ever it is more comfortable for you. Some people like the light behind them, some to the side of them..I don't know too many who like to have light directly in front of them the entire time their reading. Its not much different than being in front of your computer all day long...it gets tiring.
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If you can see something, it is because light is entering your eyes. If the thing you are reading is directly in front of you, then the light you are seeing is coming from directly in front of you.
It could be light created by the backlight of the LCD screen, or light reflecting off the eInk screen, but it is still a given number of photons directly entering your eyes. There are no eInk photons.
Someone shining a light in your eyes would be uncomfortable. Someone shining a bright light directly at your eInk screen such that the same amount of light ended up entering your eyes would also be uncomfortable.
Most LCD screens are far too bright to comfortably read from at night, and that will most definitely cause eyestrain. My BlackBerry cannot be dimmed, and causes discomfort within a few minutes. With the default system sliders, both the iPad and Nook Color are far too bright even on minimum brightness, and need apps that can lower the brightness beyond that level. My NC I use red on black at 2% brightness, and does not cause discomfort reading for multiple hours.
An advantage of eInk screens is that it is easier to control that lighting level, and how much light does enter your eyes.