SC Post Effects Documentation

https://docs.unity3d.com/Packages/com.unity.postprocessing@2.0-preview/manual/Quick-start.html

In order to use the Post Processing Stack, a script component must be added to your camera. Additionally a post processing volume must be active in the scene.

Camera setup

• Select your main camera, and add a “Post Process Layer” script component.
• On the component, in the “Layer” dropdown, select the “PostProcessing” layer (or create a new layer, dedicated to volumes)

Post Processing Volume Setup

• Go to GameObject -> 3D Object -> Post-process Volume to create a new volume.
• Assign the “PostProcessing” layer to this object
• Tick the “Global” box
• Choose a profile in the profile field
• Note that effects initialized with settings that render them invisible (to maintain blending functionality). An intensity/opacity/amount value will be set to 0, increase the value to start seeing an effect.