Looking at these coin-collectors charts coming from a group of photographers I don't know that well was a way for me to verify what I already knew from experience, such as that the CRT-Nikkor was very, very sharp. I love that sharpness, but I also love the speed of that lens and the curvature that is there. In that sense it is a flawed lens, but a "perfectly" flawed lens for my work. For example, except for a certain kind of work, I don't care that much if the corners are sharp. I like when the sharpness rolls off in the corners.
I have flat lenses with sharp corners for doing copy-like work and have done a ton of it, like taking 33,000 shots of rock n' roll concert posters on a vacuum table that I built using the Micro-Nikkor 60mm lenses.. Anyway, looking at those lists was a treat, a confirmation of my own ability to see these differences.
