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Color banding

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Namete Arachelian

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Color banding

PostWed Feb 24, 2016 5:11 pm

How do you people deal with color banding in fusion ?
I tried adding some Grain, but i just replaced one problem with another.
Is there a good way to get read of banding?
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Chad Capeland

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Re: Color banding

PostWed Feb 24, 2016 8:45 pm

Footage?
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michael vorberg

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Re: Color banding

PostWed Feb 24, 2016 9:05 pm

banding can have a lots of sources: it can be only your monitor which cant display the whole gradient, it can already be in the material your working with, it can relate from working only in 8bit, ...
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Joël Gibbs

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Re: Color banding

PostWed Feb 24, 2016 9:14 pm

What do you mean you people!?! :D
I've found that banding usually shows up when a 8bit bg or footage sneaked in. :)
Work you way back up the tree and find out where.
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Namete Arachelian

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Re: Color banding

PostThu Feb 25, 2016 3:34 pm

No footage.. just gradients generated in fusion. Working in 16 bits and i don`t know about the monitor. It might not be the best but the problem is visible on a tv screen either.
In Blender it is a dithering option wich kind of solves the problem. Does Fusion have a similar tool or setting ?

What do you mean you people!?!

I mean Fusion people :lol: .. btw, do you use black magic ? ... i mean no disrespect.
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Pieter Van Houte

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Re: Color banding

PostSat Feb 27, 2016 1:11 am

Probably your monitor. No matter what your working colour depth is, you're always limited to the colour depth of your display when looking at it. A TV screen will have the same issue.

There is a Dither tool in the Krokodove suite. Fusion Studio only.
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Namete Arachelian

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Re: Color banding

PostSat Feb 27, 2016 12:00 pm

A TV screen will have the same issue.


Do you mean LCD-s don`t support 16 and 32 bit color depth ?
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Pieter Van Houte

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Re: Color banding

PostSat Feb 27, 2016 3:31 pm

Namete Arachelian wrote:
A TV screen will have the same issue.


Do you mean LCD-s don`t support 16 and 32 bit color depth ?


Yes. Remember that's per channel. When manufacturers claim 24bit colour depth support, for example, what they mean is 8 bit per channel. But that doesn't sound so great :)
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Chad Capeland

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Re: Color banding

PostSat Feb 27, 2016 3:32 pm

Nope. Most LCD's are 6 or 8 bit. Professional ones are 10 bit, but you need Studio to use them.
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Namete Arachelian

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Re: Color banding

PostSun Feb 28, 2016 6:49 am

Anyway, adding some Grain or film Grain to the gradient with very small size (0.01-0.02) kind of solves the problem. At least on tv screen bands are not visible anymore. I used Film Grain tool and set it to Time Lock so the noise is not animated . Looks pretty good on tv and on my monitor too. The render time is a bit higher but it it`s worth it.
Thanks for your answers.
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Jun Yokoishi

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Re: Color banding

PostMon Feb 29, 2016 10:12 am

You can use fusion's own CD(Change Depth) tool that has Dither functions (None, Error Diffusion, additive Noise).
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Namete Arachelian

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Re: Color banding

PostMon Mar 07, 2016 7:41 am

Good tip. Thanks.
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jpageau

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Re: Color banding

PostWed Feb 01, 2023 10:23 pm

I like that Change Depth answer. It gave me a very good result on some FastExponentialGlows that were banding on a composited 3D render that was in 16-bit Float.

I chose Depth int8 and Dither Additive Noise. It broke up the banding without being as heavy handed the other grain tools. Thanks for that tip.
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