Bob has the right analysis of this problem. To get the maximum out of that digital sensor requires very good lenses, flawless technique, and not stopping down below f8. Those do not combine very well on many of the subjects we shoot.
Policar - I do not see any difference between digital black and white and film, as long as the digital image is properly exposed, is a suitable image for black and white, and is printed at a size appropriate to the sensor size:
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