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Originally Posted by DNSB
Interesting. It should not be doing PWM on 100% brightness even if natural light is at 0.
As for PWM causing eye strain, the studies I've seen suggest that about 10% of people are affected IF the PWM is running at too low a frequency. If the frequency is over 200Hz, I was unable to find a study that showed evidence of eyestrain.
Given the issues with LEDs and attempting to control brightness by current modulation, PWM is going to be used with virtually all LED lighting though some monitor manufacturers such as Asus are using a combined approach mixing PWM and current modulation.
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Here is a fourm thread detailing peoples issues with pwm on the iphone x,the first iphone to use pwm as a result of using a oled panel at 240hz.
https://forums.macrumors.com/threads...one-x.2085427/
Don't know where you got the 10% figure from as that thread would suggest a significant percentage experience problems associated with flicker/pwm!