Interesting observation last night while recording videos inside a room with while fluorescent lighting.
A6000 + SEL35F18.
While I was recording a video under Aperture mode with F1.8, I can see a yellow horizontal strip moving down slowly on the LCD. At first I thought there is something wrong with the lens or the camera so I stopped recording immediately. Upon playback, I can clearly see the yellow strip on the recorded video.
Power off then on again. Same settings record another video and same thing happened. Then I just play around with the ISO, EV and aperture settings and to my surprise, the yellow strip started to diminish as I increase the F size from 1.8 to 2.2 and so on. The yellow strip finally disappeared at F3.5.
Anyone had this problem before?
it's a problem of CMOS sensors interacting with fluorescent light frequency (50/60hz?). The popular advice is to set the shutter speed manually to 1/125 or slower.
I don't do much video indoor so don't really affect me