Back in the dark ages, before anybody made a good lens, say, 20 years ago....
I had a neat opportunity, to just play with glass. No spreadsheets, no illustrations here,
just the anecdote. I set up a simple shot, through big windows that opened fully, that had illumination that changed little. day in, day out. Shot 4x5 E6. Examined them for center and edge detail with a Zeiss microscope. Measured the film for edge and center brightness with a densitometer, and for contrast. Shot the stuff with a Sinar P2 on a foba tripod, with sandbags on the legs.
I had to do it all one handed, 'cuz I had a broken arm and had to do something to stay busy. Shot uncoated dagors, single coated ektars, samples of off the shelf MC lenses by Fuji, Schneider, Nikon, and Rodenstock. Shot close up stuff lit by a Hazylight.
Honestly, I was testing the Hypothesis, "Lenses from the 1950s were good enough for the 1990s."
Sent an outline to a magazine, rejected, they said there was no interest. Of course not.
So here's the deal: if you are NOT using a better enlarger than a Durst L1200 with glass carriers with Apo El Nikkor lenses,
or looking at your images through something better than a Zeiss microscope,
or have more revealing illumination than southwestern US summer sunshine,
or a more stable platform than was used to run the test, and better film than 'old' E6 chromes and... TechPan,
and won't be grain sniffing anything bigger than a 20x24,
the only thing I can tell you is that your technique is more important than any optical difference,
diffraction and camera movement kills pure optical performance,
and for most normal photography a 1950's journeyman grade lens (dagor, ektar, etc.) is better than you need
90% of the time. AND IF you NEED something better, ANY new lens is superbly efficiently
and virtually indistinguishable from another, made by anybody.
The gold standard of photo sharpness is still Adam's work from the '40s and early '50s.
ANY commercial lens from the '50s will do as well or better than Ansel used, the cameras are better, the film beyond comparison (despite the claims of factories using obsolete technology to make us film),
and new developers are so far beyond what Adams had to use it is just... silly.
So, here's what I did: I understood 20 years ago that if the picture wasn't perfect, it was my doing.
I sold off my posh new glass and made do with the old stuff. I returned the Sinar to a friend, the microscope to the university, and stopped worrying about it.
Today, film is better. Cameras, any cameras, are dirt cheap. Labs are still throwing Durst enlargers, and Omega and Beselers, into the dumpsters. Anybody with a job, which is always a thing to be thankful for, can go into the field better equipped than Weston-Adams-Anyfrickingbody, and execute ANY picture we might want to make.
Now, that is based on the assumption that you WANT to make great pictures. If you just want to test stuff, do what I did, have a couple beers and play in goal on a Sunday afternoon with a bunch of friends. But after the broken arm heals, go take pictures.