That is the opinion I get from a Bob Shell book on Mamiya equipment that I just got & research on the web. I have a C330s & 6 lenses which I haven't used much to date, but my all-black lenses are said to have been formulated to be "softer" to please wedding & portrait photographers! I do have a few 8 x 8" prints my friend made w/a Negatrans from tripod shots, and the sharpness is indeed underwhelming.