![]() Many are familiar with the “rods and cones” that provide our visual capabilities, but the retinal ganglion cells containing melanopsin are sensitive to a wide range of “blue-green” frequencies around 480nm.Ī wide range of lights appear to be able to stimulate the circadian system in humans, and so while we refer to “blue light” in order to distinguish it from the light our visual system sees, it includes lights that appear green, blue, cyan, and even orange.ĭid you miss a post? Check the Eye On Apple home page to get caught up with the latest news, discussions and rumors about Apple. ![]() The science that explains these new systems has accelerated over the last 20 years, with the discovery of a new photopigment in the eye, called Melanopsin, in 1998. We know that night-time exposure to blue light makes people more alert and also affects their circadian timing. iPhone and iPad users can also use Night Shift scheduling as well in iOS.Now if you haven’t used Flux or Night Shift and don’t understand why warmer colors are better for your sleep, see this article from the Flux site: If your Mac is not supported, you can use NightPatch to patch older Macs to support Night Shift, otherwise older Macs can use Flux for a similar effect.Īs mentioned before, if you don’t have a recent version of Mac OS for whatever reason, you can get the same effect on your Mac or Windows PC with the help of the flux app discussed here. Mac models that do support Night Shift include the following computers: MacBook (Early 2015 or newer), MacBook Air (Mid 2012 or newer), MacBook Pro (Mid 2012 or newer), Mac mini (Late 2012 or newer), iMac (Late 2012 or newer), and Mac Pro (Late 2013 or newer) Basically, the display colors will be warmer when it is enabled. Thus to demonstrate the effect you either have to test it out yourself on your Mac screen, or create a mockup as we did below. It’s important to point out that while display colors shift warmer when Night Shift is on, those warmer colors do not transfer over to images, pictures, screenshots, or anything else created on the display. What does Night Shift do? What does Night Shift look like when enabled? My personal preference is to have the warmest possible setting for maximum theoretical benefit to the eyes. * Generally speaking, the warmer the display temperature is set with Night Shift the better the effect is supposed to be by reducing blue light emission, and yes there is some science behind this. The display will also reduce the warmth automatically in the morning either at sunrise or at the time chosen. Now in the evening hours, either when the sun goes down or at the custom time you set, the color temperature of the display will change to become warmer automatically. ![]()
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