Why Night Shift May Seem a Little Half-hearted
When one German customer emailed Apple’s SVP of software engineering Craig Federighi to suggest that Night Shift had more blue light than Flux, he received a reply explaining that there was good reason for this[…]
Given the display technology we push it as far as we can without introducing major red ghosting artifacts when scrolling / animating. (Unfortunately, the red phosphors in the LCD hold their color longer and when we shift the display too far into the red then scrolling results in irritating ghosting artifacts).
Update (2016-08-16): etendue:
Federighi’s response is nonsensical: LCDs don’t use phosphors in the color filter plane.
