Black White Camera Shader

Need Help:

In My Menu I want to turn Black/White
All geometry should be black and the Background white

Like the grayscale shader in the camera effect shaders

Of course i could set background white and change all materials to black. But maybe there is a more inteligent way ???

Are you saying the greyscale shader won’t work because everything should either be completely black or completely white, with no shades in between?

exactly just total black total white. Thats what i need

Use a black and white image for the colour ramp in the ColorCorrection shader.