Why is this? When recording at inside or under fluorescent lamp by Galaxy J 2017 series, the video screen twinkles and black lines appear. Especially, it seems to appear clearly when taking by slow motion.

Last Update date : 2017.07.19




This is a normal phenomenon related to flicker of light source that occurs when the light source

taking the form of a flashing frequency of the fluorescent lamp to the camera. Flicker

phenomenon can mainly be generated at a shutter speed of 1/120 or more and it occurs in the

characteristics of the CMOS sensor. It is not a product defect.


This is normal operation which can happen on all camera with CMOS sensor and it’s caused by

CMOS sensor’s original specification.



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