GH5 Why do cameras show flickering of lights differently?

A

analogs

Well-known member
I have noticed that different cameras produce different kinds of flickering on the same florescent or led light even when recorded at the same frame rates to each other. Tried NTSC 24, 30, 60, Pal 24, 25, 50.

I thought the flickering could be stopped if you set the frame rates at the power hz rates for your country which is 50 for Australia.

Gopro seem to have produced the best minimal flickering when set at 50fps.

What causes these differences and how come it has not cancelled out the flickering when I set the same fps as the power hz?

Can you remove the flickering in post?
 
you should use syncro scan to dial in the correct shutter speed to get flicker free when u have mix lights like this.
 
Did the cameras all use the same shutter speed? If not, that's likely your culprit. Frame rate and shutter speed can both be a factor, either together or independently. Theoretically, the read-out speed of a rolling shutter senor could also be a factor - though even the worst jello camera is reading out pretty damn fast.
 
My gh4/gh5 experiences have seemed that they were a bit more prone to flicker issues than some of my other gear. Not sure why. I usually notice it, but sometimes it is hard to see on set. But, I have found that I have been able to remove it in Resolve using Motion blur settings and some other tricks.
 
In 50hz countries you need to set your shutter to 1/50, 1/100, 1/150 to not see flicker in practical lights.

In 60hz countries you need to set your shutter to 1/60, 1/120, etc., to not see flicker in practical lights.
 
mcgeedigital said:
In 50hz countries you need to set your shutter to 1/50, 1/100, 1/150 to not see flicker in practical lights.

In 60hz countries you need to set your shutter to 1/60, 1/120, etc., to not see flicker in practical lights.
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Hi mcgeedigital, I have tried those fps rules but it doesn't seem consistent from one camera to another regarding the degree of flicker.

@joe12south, it could be shutter related but I thought action cameras would follow the rule depending on what settings you set on the camera whether PAL or NTSC. So if I set in Pal, wouldn't action cameras set the shutter speeds in 1/25, 1/50, 1/100, etc. and not use any NTSC settings?
 
I can't speak to how your action cam chooses shutter speed, but I can tell you that the interplay of frame rate and shutter speed can sometimes cause flicker that you otherwise wouldn't expect.
 
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