Black and white conversion has never look faithful in my opinion especially the 'desaturate' function in photoshop. Fooling around this morning I found black and white conversion in NX, located off the filters tab on the toolbar.
Not only will this filter convert to back and white but allows control over the process (see pic 2)
The image I was viewing seemed perfect for the black and white as it could hide the bushes in the background allowing more attention to the subject.
Pic 1 - Original uneditted image
Pic 2 - Black and White conversion dialogue box
Pic 3 - Black and White conversion applied using standard settings
Final image in our gallery
http://www.worldphotographyforum.com...4&limit=recent
The more I experiment the more useful NX becomes.