Hey Kent, I can't say that I agree with your 'projected angle of light' theory. All M645 lenses have the same projected cone of light from the rear element to the film plane, regardless of focal length. I've found that my C 35/3.5N and C 55/2.8N are every bit as good as most of the equivalent 35mm lenses that I've tried, including some stellar performers from Zeiss, Leica, Pentax and Canon. Jim.