Please note, this is an observation, not a criticism.

Having spent a lot of time working in and around 1970's camera shops, I find the "discovery" of lenses from that era by younger photographers amusing.

Now that many mirrorless cameras can accept practically any lens mount made, allowing manual focus and exposure, Facebook groups are popping up. People raving about 50mm f/1.4 Super Takumars, Vivitar lenses and even one fellow in love with a 135mm 2.8 Focal brand lens (K-Mart house brand). And many have decent photos to prove their claims.

Granted, there were some well made lenses in the 70's, but also a lot of very mediocre stuff sold as part of the old "kit" of camera brand 50mm, and off-brand 35mm & 135mm.

There are also those shooting with projector lenses, etc. Others are fond of Russian pre-sets. Prices for all this old stuff are increasing...for now.

I've adapted a few old sentimental favorites on my 4/3rd camera, but my new lenses that focus fast and communicate data to the camera deliver more consistent results. And maybe, for me, it's just a case of "been there, done that." I suppose if I found a full frame body cheap, I'd try to find an old 105mm f/2.5 non-A/I Nikkor...if it wasn't insanely high priced! But $150 for a 50mm Chinon??? Nope.

I am waiting for my mint Spiratone Sun 80-210 zoom lens with stop-down trigger and T-mount to be discovered!