Pleindevie3
PWM (Pulse Width Modulation) frequency and flickering with artificial lighting can cause issues like black bars in smartphone pictures. PWM is a technique used to control the brightness of LED lights. If the PWM frequency is low, it might not be detected by the human eye but could interfere with the camera sensor, potentially causing flickering or unusual artifacts in photos. This is more noticeable when capturing images or videos under artificial lighting with low-frequency PWM.
When capturing images or videos under artificial lighting with low-frequency PWM (Pulse Width Modulation), the light source rapidly cycles between on and off states. The camera sensor, which captures a series of frames per second, may capture the lighting in different states during this cycle.
If the camera’s frame rate and the PWM frequency are not synchronized, you may end up with frames where the light is in an on or off state, leading to flickering or inconsistencies in the captured image. This can manifest as bands, lines, or variations in brightness.
Reason why it not happens in other phone camera’s you tried is probably because of a different sensor.
