Hi All,
Does anyone know what goes wrong with this Vignette effect… ?
I’m not sure what I did wrong with the node, but my image goes black and white with current Vignette effect…
scene setup:
Image result:
It seems to be the RGB Curves is the issue. It is Black and White. it should go between the Image node and Scale node if you only want to adjust the color of the vignette.
can you please elaborate more?
I dont quite understand. Thannk you… 
It is actually the Math node that is the problem, it takes a Value input, i.e. a BW image. This means you loose all colour information there. You might want to either use an RGBMix node instead, or split the image with SeperateHSVA and only add the Value output, and then combine.
Edit: For example like this:
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