This is a somewhat overcrowded area of experimentation. In fact there's even an article written about it - "Stop Trying To Turn Film Cameras Into Digital Cameras" [1]
The real problem is that sensors available to hobbyists are quite low-end. They can just make bad digital pics; losing both the magic of film and the fidelity of digital. Old film lenses are only usable if you get a crop factor of 2x (m4/3 size) or less, so that you can use a 40mm (as found in many inexpensive rangefinders such as the Electro 35) as an 80mm - not great for typical use but usable.
I am actually quite surprised why in all these years, no one has made somewhat affordable ($100-400) larger sensors available for the hobbyist market. Given that there are a couple of small Chinese manufacturers making m4/3 bodies, it's surprising that no one is servicing this small (but not necessarily unviable) market. More likely is the availability of a 1" sensor at a much lower cost since ~1" sensors have started appearing on phones. That'd make a wide 24mm lens a 65mm normal lens. That would be on the far end of usable, but anything smaller is just a stale experiment for the wider audience. But of course - any experiment can be quite rewarding for whoever is doing it.
The real problem is that sensors available to hobbyists are quite low-end. They can just make bad digital pics; losing both the magic of film and the fidelity of digital. Old film lenses are only usable if you get a crop factor of 2x (m4/3 size) or less, so that you can use a 40mm (as found in many inexpensive rangefinders such as the Electro 35) as an 80mm - not great for typical use but usable.
I am actually quite surprised why in all these years, no one has made somewhat affordable ($100-400) larger sensors available for the hobbyist market. Given that there are a couple of small Chinese manufacturers making m4/3 bodies, it's surprising that no one is servicing this small (but not necessarily unviable) market. More likely is the availability of a 1" sensor at a much lower cost since ~1" sensors have started appearing on phones. That'd make a wide 24mm lens a 65mm normal lens. That would be on the far end of usable, but anything smaller is just a stale experiment for the wider audience. But of course - any experiment can be quite rewarding for whoever is doing it.
[1]: https://casualphotophile.com/2022/05/19/digi-swap-im-back-re...