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A comment on The Invisible Light That's Harming Our Health. Parent comment

Re:The Invisible Light That's Harming Our Health by vitaflo on Thursday June 19, 2025 @11:45AM (#44319727)
The latter. But it’s the preview you’re looking at. You’re not actually taking a photo.
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Re:The Invisible Light That's Harming Our Health by bmacho on Thursday June 19, 2025 @11:58AM (#44319873)
A camera app can't set a phone camera to 10,000 fps. So the question is what does it do?
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Re:The Invisible Light That's Harming Our Health by bayindirh on Thursday June 19, 2025 @12:30PM (#44320170)
Due to rolling shutter, you take a “progressive” photo. As a result, if the screen flickers during that time, you see this change in light intensity as horizontal bars.

Thicker bars means a lower PWM frequency, hence lower quality light/brightness control.

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