Apple's Night Shift May Have Zero Effect On Sleep (macworld.com)
eggboard writes: While blue light emitted by monitors and mobile displays has been widely cited as a cause in disrupting people's circadian rhythm, the evidence is thin: a narrow range of blue spectra might not be the problem (it may be a more complicated interaction), brightness may be more important, and Night Shift's (and f.lux's) effects are probably too negligible anyway.
Apple's Night Shift feature lets you adjust the color temperature of your display to the warmer end of the spectrum. Apple notes, "Many studies have shown that exposure to bright blue light in the evening can affect your circadian rhythms and make it harder to fall asleep."
Been using f.lux for a few years now; it does wonders to reduce my eye strain but I still find myself up in the late hours, regardless.
Contrast ratios are too high when reading in bed. Warmer light is perceived as less bright, reducing apparent contrast.
I am happy they have it now, rather than making white backgrounds gray as an alternate.
Wasn't it supposed to be amber that was best on the eyes? I always hated that myself, and was solidly in the green camp. One of the first things I always do on a new computer is set the terminal to green on black.
Imagine all the people...