- Edited
mike Read this carefully
A few nights ago, I was crossing a street with many shops.
I turned on the cell phone camera
I set the mobile camera to Proffessional mode
Then I set the shutter speed to 1/1000
I started walking past the shops and it was very interesting that some of the shops had their lights on very Flickering.
While others used LED bulbs, there was no blink.
In fact, I am coming to the conclusion that a number of LED manufacturers, for various reasons, including increasing the lifespan of LEDs in situations where those LEDs are of poor quality, try to reduce the frequency of turning on and off the LEDs, and this is even for some people. It is also dangerous that they do not have a problem with this issue. Because after a few years, their eyes will definitely have problems.
Is health important for trade and income for these producers? Yes sure . Just sell for less.
You can also test this, with safety and caution
WITHUT MOBILE CAMERA AND 1/900 OR 1/1000 OR 1/1500 , ...... sHUTTER SPEED CANOT SEE FLICKER BY EYE !
BUT IT CAN START YOUR HEADACHE
YOU SHOULD NOT TAKE PICTURE ! ONLY SHOULD VIEW BULB BEHIND CELL PHONE CAMERA IN 1/N SHUTTER SPEED IN PICTURE MODE !
sOME CELL PHONE WITH AUTO SHUTTER SPEED MODE PREVENT TO SEE FLICKER BUT FOR EXAMPLE I AM SEE fLICKERS BEHINDS HUAWEI MATE 8 AS CELL PHONE , AND HUAWEI MATE 8 IS A GOOD CELL PHONE THAT IN LOW OR HIGH BRIGHTNESS NOT HAHE PWM FLICKERING PROBLEM , I CN SEE 4-6 HOURSE MOVIE BEHIND HUAWEI MATE 8