Is it possible to change viewport to greyscale?

sometime I use UE4 for concept art planning and paint over, it would be helpful if it possible to render a picture or see a view port in greyscale like this

is this possible in UE4? if so, how should I do it?
many thanks.

Editor viewport have few viewmodes, like lit, unlit, detail lightning and so on.

You switch them with Alt + 2, 3, 4, 5

Game viewport also have them. You can switch viewmode with console commands.

An easy way to do it, just set saturation in your camera details to 0.

139744-2.png

A solution yes, but honestly, a luminance viewport option like any render engine would be very appreciate please :pray: