Blackmagic Forum

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?

Footage?

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, ...

What do you mean you people!?!
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.

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 .. btw, do you use black magic ? ... i mean no disrespect.

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.

A TV screen will have the same issue.

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

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

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

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.

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

Good tip. Thanks.

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.