Thought I'd go to the most compelling example. Here's young man at the Graffiti Park (Hope Outdoor Gallery). The image above is a 100% crop of the image just below. Click on any of the images to see them larger and to launch them as a gallery. Do I think the 40+ year old lens acquits itself nicely? Yes, I do. It doesn't auto focus but other than that I find it to be.... in the same league as the new optics. These were all shot on an OMD EM-5 at ISO 200-ish and using f2.8 and f4.0.
I know what I think after seeing them but would love to hear from the assembled, crowdsourced, super resource of brains and experience... The lens is the Olympus Pen-F 70mm f2.0. It was made for the Pen half frame film cameras sometime between 1968 and 1974. I like it.