4. Do your research before buying a lens.
I’ve written a more detailed article here. Spoiler alert some old lenses may be radioactive so this is something worth considering before deciding to buy a vintage lens.
As with any used gear out there, know your stuff before giving your money away.
Pentax lenses, even old ones, will adapt to your modern Pentax camera without an additional adapter, old Nikon lenses will adapt to your modern Nikon camera without an additional adapter, old Canon FD lenses will not adapt to your modern EOS camera without an adapter but if you’re using a mirrorless camera you will definitely need an adapter.
The good news is that any type or kind of lens can be adapted to a mirrorless camera due to their short flange distance but you’ll need to buy an adapter first. Cheap adapters will work but they won’t be perfect, they’ll either have some play when mounted to the camera, or paint chips or filings will come off so it might be a good idea to have an individual adapter for each of your lenses or if you decide to pay 100 euros or more for an adapter you can only have one for your entire lens collection if your lenses are all of the same mount.
If you’re a perfectionist or pixel peeper, buying an expensive adapter might (can’t say for sure) offer better image quality because of better design as in the way they allow light to hit the sensor. However please note that even a modern kit lens will offer better results pixel peeping wise compared to a vintage lens.
I prefer buying cheap adapters even if they’re not perfect because I want the experience of using a vintage lens like manual focus, changing aperture using a ring and hearing it click.
6. Take your time, take less pictures
I’ve written about this before in broad strokes here. There’s good news and bad news. The bad news is getting used to manual focus might take a bit but almost all modern cameras have focus peaking or a large screen on the back to help you focus more easily.
The good news is that slowing down is giving you the potential of getting a much better hit rate on your keepers. Because your pictures won’t be razor sharp, the composition, the subject and the story behind them will have the main roles.