Over the years, I came to own several Vintage Lenses. Most of them came with Vintage Cameras I bought at flea markets, got gifted or, in one case, inherited. Some of those lenses are really quite weird.
For example the Canon 35-70mm 3.5-4.5A I got with my Canon 1000N. It’s not the oldest lens that I own, but it is a quirky little thing. For example, it has a semi internal zoom, but the lens threads move in and out the lens barrel. It has auto focus, but there’s absolutely no option for manual focus. The lens is extremely soft, but the AF actually is not all to bad.
And while I do have adapters for that Canon Lens and my Pentax PK Lenses, I definitely prefer to shoot them with the Vintage Cameras they belong to. I also prefer my completely manual Pentax PK and Canon FD Lenses over the weirdness of the fully auto Canon 35-70mm 3.5-4.5A, it is Canon EF mount by the way, so I can use it with my standard Canon M Adapter.
Shooting Film just gives that awesome, authentic Vintage Look that just using old lenses can never give. Modern Cameras just have to much resolution for that. Just beware that you load your film correctly, or you will end up realising that your Camera captured nothing while you were under the impression of everything going quite smooth. It happened to me once in Hamburg, and it sucked. Mostly because I only noticed after I had filled up my 36 frames, but the advance lever still moved frealy.