Sigma-Foveon does Black and White

Cameras equipped with the Foveon sensor are renown for producing stunning colour images because of their unique three layer technology. But how good are they at black and white? There are a lot of people who think the monochrome output from these cameras is at least as good their colour. Make a powerful statement in monochrome with your Sigma-Foveon images. Subjects can be anything, so long as they don't contravene the DPR Challenges Rules.