Unbelievable 'banding' A7Sii....or is it??

[RGLmotion]

Hi guys,

 

 

theres banding THEN THERES BANDING. Theres flicker THEN THERES FLICKER.

This....I have no idea what this is...

 

HUGE thick lines across the screen that basically turn that specific ones area into black and white. The lines don't move up and down like conventional 'flickering' and its across the entire screen instead of just colours like conventional 'banding'the lines just stay there constant f*cking my sh*t up.

 

Filming in pal and shutter speed changes have no effect on it at all, it almost looks like its burned into the sensor. Please don't talk to me about frequency etc cause this isn't simple 'flicker.'

 

Any help would be much appreciated.

 

 

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[OldNoob]

Does it do it in all locations?

Are you using any type attached lighting?

Try replicate the same shots in a different building and see if the problem persists, this may be due to the frequency of the florescent lighting in that room. 

You can confirm or eliminate the camera or the lighting and the cause buy repeating the images in another location.

Also if doing video, try increasing the record rate to 120fps in that situation.

[VTC]

For me, lowering the shutter speed to 30fps eliminates most banding while shooting video and even that may vary somewhat. The broadening of band will vary depending on the frame rate and frequency mix of lights on scene. On this shoot the banding appeared on select portions of the video but never on photos. Was too busy to notice while shooting and am more careful to spot it before hand and adjust accordingly. Only evidenced on the red spectrum lighting the subject.

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[cws]

On the first shot (pic of your camera screen) I can see quantization (colour banding) on the punching bag.

On the 2nd shot I'm not sure I'm seeing anythong wrong, except a guy about to bust his guts or strain himself....   ... maybe a little quantization around the top of the bag again.

That's usually caused by not enough bits or data-rate to give a smooth transition across a smooth colour palette (blue sky is normally the worst problem).

Notice its set to MP4 recording.

Have you tried XAVC S?  Its a much higher bit-rate codec and might solve your issue, if its the quantization that's bugging you.

 

from the specs:

MP4       1920 x 1080p / 50 fps (28 Mbps)

XAVC S   1920 x 1080p / 50 fps (50 Mbps)

 

?