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Well firstly you can literally compare anything ;) But to be more precise: both "emit" light depending on the ambient light. Of course it's comparable. The on

Well firstly you can literally compare anything ;) But to be more precise: both "emit" light depending on the ambient light. Of course it's comparable. The only thing really throwing off the LCD would be the white balance, but with the right sensor that too could be fixed (e.g. a camera with fixed wight balance behind milk-glass).

tyler109 6y ago
What about the the blue light emissons?
- anotheryou 6y ago
  What about them? (E-)Paper reflects blue light, LCD backlight emits it. The only difference is that the color balance and brightness don't change with the sunset on your screen unless you install a tool like flux. Light is light. Looks the same = probably is the same. Bands are just a bit narrower with LEDs, but I wonder if that makes any difference biologically if it looks the same.
  - itronitron 6y ago
    With a backlit monitor (or projection screen) your visual system is doing extra work to reconcile two different lighting conditions. eink/epaper is reflecting ambient light just like every other object in the environment so your vision won't need to adjust when glancing back and forth
    - anotheryou 6y ago
      Yes, e-paper auto-adjusts. But so do phones if they are set right (best done with a matte screen).
    - Stratoscope 6y ago
      This sounds like your monitor is set too bright. (Or less likely, not bright enough.) If you set your monitor to the same brightness that paper or a non-backlit screen would have in your room, then your vision doesn't have to adjust to the different brightness levels. Same for TV. Don't watch TV in a dark room! When I had a modest home theater with a projection TV (the old bulky kind, not a separate projector and screen), one of the best things I did was to light the white wall behind it with a soft neutral gray light. The technique at the time was to use a small fluorescent desk lamp on a small table behind the TV, with the fluorescent tube wrapped in a specific color of lighting "gel" to make it a neutral gray. The lamp was aimed up at the wall behind the TV. This made everything much easier on the eyes.

tyler109 6y ago

What about the the blue light emissons?

anotheryou 6y ago
What about them? (E-)Paper reflects blue light, LCD backlight emits it. The only difference is that the color balance and brightness don't change with the sunset on your screen unless you install a tool like flux. Light is light. Looks the same = probably is the same. Bands are just a bit narrower with LEDs, but I wonder if that makes any difference biologically if it looks the same.
- itronitron 6y ago
  With a backlit monitor (or projection screen) your visual system is doing extra work to reconcile two different lighting conditions. eink/epaper is reflecting ambient light just like every other object in the environment so your vision won't need to adjust when glancing back and forth
  - anotheryou 6y ago
    Yes, e-paper auto-adjusts. But so do phones if they are set right (best done with a matte screen).
  - Stratoscope 6y ago
    This sounds like your monitor is set too bright. (Or less likely, not bright enough.) If you set your monitor to the same brightness that paper or a non-backlit screen would have in your room, then your vision doesn't have to adjust to the different brightness levels. Same for TV. Don't watch TV in a dark room! When I had a modest home theater with a projection TV (the old bulky kind, not a separate projector and screen), one of the best things I did was to light the white wall behind it with a soft neutral gray light. The technique at the time was to use a small fluorescent desk lamp on a small table behind the TV, with the fluorescent tube wrapped in a specific color of lighting "gel" to make it a neutral gray. The lamp was aimed up at the wall behind the TV. This made everything much easier on the eyes.