You are defining everything with contrast. Do you put this on to the table with MTF or Phase ? If we give wrong impression to the people , this goes wrong way. Phase contribution to the image is faraway greater , MTF is the one of the two variable at OTF. Real important one is the phase variable. If you use the highest possible MTF graphed , sharp lens , if the phase sucks , your image turn to an alien , like Japanese lenses. You can design a ultra high contrast lens - like my Fuji - but with a coma or vignetting , these are basic aberrations , it goes down.
MIT presented a research to input an image , extract its high frequency details , nonlinear analysis and than put the function work on an other image. This is some explanation.
Your novar must have a problem , Triotar is the real gentleman , never distracts the eye , lots of line detail and tones are legendary.
How we can define a legendary term , I am looking for a optics test lab at china and order few lens to be tested for phase.
Other interest area is to simulate the aberrations one by one and as a combinations derived from these tests on images and learn what is Leica and Zeiss were doing and how .
I think I will send the first lens after Christmas.
It is fun to know why something works but regardless of the numbers, tables, and the like; if a lens produces nice work in practical situations, that's all that really matters to me.
Mark Barendt, Beaverton, OR
"We do not see things the way they are. We see things the way we are." Ana´s Nin