Timeline for Why does my first picture have a dark area and the next is fine?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Sep 15, 2023 at 21:58 | comment | added | Ruslan | @dandavis OK, I was talking about video shot by a phone (and also by dashboard cameras), where too often do I notice the flicker of traffic lights. | |
| Sep 15, 2023 at 21:55 | comment | added | dandavis | @Ruslan well, I was speaking for a 24fps frame rate. If you shoot under 180 deg shutter angle (aka 2 X FPS), you get no motion blur and the video looks terrible and amateurish, like it came from a phone or camcorder; uncinematic. | |
| Sep 15, 2023 at 21:51 | comment | added | Ruslan | @dandavis that's the frame rate, but not necessarily the exposure of each frame. In bright daytime conditions the exposure will likely be shorter. | |
| Sep 15, 2023 at 21:50 | comment | added | dandavis | @Ruslan: video should be shot at 1/50s, more than enough to oversample the PWM strobing. | |
| Sep 15, 2023 at 19:34 | comment | added | Ruslan | This also is a problem when taking a picture with LED-based traffic lights in frame. On videos this becomes especially jarring, because the lights appear to flicker badly on the recorded video, completely misrepresenting the actual performance of the traffic light. | |
| Sep 15, 2023 at 15:42 | history | edited | Euri Pinhollow | CC BY-SA 4.0 |
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| Sep 15, 2023 at 10:39 | history | edited | Euri Pinhollow | CC BY-SA 4.0 |
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| Sep 15, 2023 at 8:16 | history | edited | Euri Pinhollow | CC BY-SA 4.0 |
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| Sep 15, 2023 at 7:18 | history | answered | Euri Pinhollow | CC BY-SA 4.0 |