[Chris Saper]

Unless I have grossly misinterpreted what I've read (always possible), shooting additional digital frames in B&W is an excellent decision.

I think that each time you shoot at a given resolution, the camera will consume all the available megapixels it has to image the shot. Color consumes a LOT more pixels than B&W. So your B&W image would have much more resolution.

While I have no scientific data, nor control-specific comparisons, I know that I can count (in B&W) the nose hairs on the top edge of a nostril from six feet away. (Under the heading , "Why would you want to?")