Armand, That's the kind of thing Elliott Erwitt did so well, and this is well done. Jeremy's probably right, but it's really hard to tell. What one sees on the screen is quite different from what one sees in a print. The easiest approach to good B&W conversions is Nik's Silver Efex Pro, but you can get the same conversion if, as Jeremy suggests, you play with the sliders. Don't forget the color sliders. They can make a major change in middle gray tones.