Black and White rendering of a color scene

[Brian Jones]

Depending on what look you want and what plugins you have…
-Take all the textures off
-use the Cel Renderer
-use Sketch and Toon
-use LSD (from 3D Attack)
-post process in Photoshop or your favorite video editor
-something else I’m not thinking of 🙂

[Doug Bassett]

You should do this in a post app like shake, AE, FCP, etc. The fast way is to pull all the saturation out. The best way is to conform all the color channels to 100% of the best channel.
In other words, If you like the look of the red channel; then set all of your color channels to 100% in the red and 0% everything else.