Actually I wasn't a believer even with this Harvard Health study on the effects of blue light on poor sleep etc. http://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side But with iOS 9.3 and Night Shift that warms the screen by removing some of the blue LED light, I do find it more relaxing at night, before bed, and if I wake up early (4ish) and use my phone. I don't become fully awake. Can be set on a schedule or manually from the control screen. Sent from my iPhone using Tapatalk
@viewfly, it says on your screenshot "automatically shifts…after dark". Does that mean one of the scheduling options is to use the sunset/sunrise times?
That's correct. I have mine set to sunset/sunrise. I like the color temperature shift as well, pretty similar to what f.lux offers.
There is also a manual option and the color temperature is adjustable as well. I need to install f.lux on my Surface 3, it looks too harsh in comparison, always had it on my MBP.
I set mine from 10 pm to 7:30am. After that, I can't find the Sunrise or Sunset option anymore. So 'after dark' is generic, meaning what you define it as. If I do a 'manual' set, it starts immediately and stays on until the next morning, 7:30 am in my case. I don't like it to start at sunset...I like to view photos without a yellowish warm glow to them. A few or 2 hours before bedtime probably works well. It's an individual thing.
http://www.macworld.com/article/302...-apple-to-open-up-night-shift-in-ios-9-3.html Sent from my iPad using Tapatalk
Ok, I'll stay with the default ten to seven and see if there are any complaints Sent from my SM-T320 using Tapatalk
Sunset in California is pretty early. My understanding is the important part of the equation is using the phone *in* the dark, not just *when* it is dark. So the bedtime seemed like a better approximation. Sent from my SM-T320 using Tapatalk
@dmapr: Regarding sunset in calif. I was born, raised and have grown old here. Boy, you ain't kiddin' about sunset variances. But I have noted that during the winter sunset can be at 5pm, whereas during the summer it can still be light at 9pm. (Raised in Orange County. Spent a few decades in Alameda Cnty. Now in San Joaquin / Stanislaus area.)
Yep. But where I grew up, the sunset in winter was around 4 p.m., in summer around 10 p.m. Sent from my Nexus 6P using Tapatalk
@JFB: Thanks for mentioning f.lux. I'd never heard of it. https://justgetflux.com/ Back in 2012 I wrote this blog article. Since then, multiple research articles have come out.
@dmapr: Regarding Twilight: That is the weirdest audio on a video I have ever heard. It reminding me of hearing an old Beatles song played backwards!
Thirty years ago, some colleagues of mine would bring in home incandescent lights to replace the harsh fluorescent office lighting. And research on these light sources, and blue LED's over the last 10 years have supported their intuition. What made me uneasy about a recent research paper on blue light ( used in the 2012 Harvard Newsletter in the OP) in tablets vs warmer lights, is this: The paper, and many research papers must do this, set students in the study to extremes, to produce the results. Nightly tablet users had the screens to maximum brightness, 6 hours of usage (IIRC), and book readers set with the weakest wattage bulb for similar times. None of which are real world conditions. My iPad is set to Auto and the brightness is quite dim at home. But I've always found, and most people, that warmer lighting is much more soothing and harsh. Always hated those work computer rooms. So I am liking Night Shift, and that it is automatic. Sent from my iPad using Tapatalk