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GH4 sky banding


Vesku
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I made some testing with my GH4.

The GH4 sky (all gradients) roughness is not sensor noise. It is quantization and compression rubbish and it is there even with zero sensor noise. In fact the sensor noise can break the image a little and help with banding. I still dont want any rubbish or noise.

I think the cure for banding is to raise camera sharpness a bit (+1, +2) and then when watching or editing I can leave sharpness o or even add blurring. My banding/sky roughness issue has lately become worse because I have tested lowering sharpness when shooting and adding sharpness in post digging all that rubbish visible.

The GH4 recorded base noise is not changing much when adding camera sharpness at iso 200. Also the GH4 banding is about the same whatever settings I am using. I tested it. Idynamic and curves increases sensor noise in shadows but not banding. Master pedestrial makes blacks gray but decreases noise and banding. NR blurs image and is not helping much with banding.

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EOSHD Pro Color 5 for Sony cameras EOSHD Z LOG for Nikon CamerasEOSHD C-LOG and Film Profiles for All Canon DSLRs

I tested a de-band filter in Potplayer. It removed completely my banding issue while playing GH4 4k videos. The video is super clean and sharp. No noise, no banding and still sharp. I am surprised that I didnt try this before. It is now like having GH5 already.

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2 hours ago, Vesku said:

I tested a de-band filter in Potplayer. It removed completely my banding issue while playing GH4 4k videos. The video is super clean and sharp. No noise, no banding and still sharp. I am surprised that I didnt try this before. It is now like having GH5 already.

Good to see that working. I couldn't get it dialed in right with V Log 8 bit.

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