How to desaturate and blur the game world when paused in Unreal Engine 4

Question

I am creating the pause menu for my game. I want the screen to turn black and white and blurry when it is paused, much like Left4Dead. But the only special effect I can find is background blur. How can I do this?

I'm using Blueprints in Unreal Engine 4.26

Answer 1

The simplest way would be to apply post process settings to the camera and lower the saturation. To enable the saturation pin, click on the make node and enable it in the details panel.

Alternatively, instead of applying it to the camera, you could add a post-process component and apply the effects there.