I am trying to create a function that adjusts the density of a cloud material according to the camera distance. The idea is to make the cloud layer appear more in the distance without having to use invisible spheres that make the clouds fade out.

I tried using a "distance to camera" input node and connecting it to a "map" filter which was then combined with a noise node before I connected it to the density output node. Obviously that didn't work, because I am not such a mathematical guy with the pefect understanding of the editor's logic ;-).

Any ideas?