I haven't had such nice OOC black and white since my Panasonic LX3's Dynamic Black White setting (not sure of the exact name since I don't have the camera any more). I have done quite a bit of experimentation with the Monochrome mode in my GH2 and GX7 and never had results like Matti's. Check out this video if you'd like to experiment: http://youtu.be/zYKlqmr6kZY