>>But c'mon, be honest, do you really think that you can judge the fine qualtiies of difference (if they exist) under the conditions I noted?
Scanned to digital, downsized to fit onto RFF, viewed by your monitor?<<
I'm an ex-newspaper photographer who takes a lot of pictures of his kids, mainly to be emailed to far-flung relatives. Every now and then I do photo assignments to be posted on my workplace website. The things I care about are flare, contrast, color rendition, enough sharpness to crop in really tight if need be. I get my negs scanned at a grocery store at 1.5meg resolution and the work negs scanned at a one-hour shop at 2 meg. And for me, it works. If the difference shows up in the grocery-store scans, then it matters. Otherwise, it doesn't.
I think the first couple of pictures in this thread pass the "computer monitor" test. There's a noticeable difference, and I prefer the qualities of the newer lens.
The main reason I posted the second set -- the three lenses side by side -- was to show that there wasn't any difference in that particular lighting condition.
Being a Nikon RF die-hard, unlike Leica shooters, I'm pretty much stuck in the "greatest hits of the 1950s" mode. It's been pleasantly fun to get a new piece of glass. But I'd never trade those old classic ones. They're still my workhorses.