@jeder my grandfather had a ton of Dias. We never came around digitalise them, but with a SLR already there such a setup would make the process way faster (especially a DÃa scanner is very expensive, one time use and there aren't many places to rent such a device anymore)
@jeder it probably is. But for that one time going through like some Dias for 50€ it's okay. And you can easily resell it on eBay or something, so the loss isn't too high.
Scanners are the easiest and fastest way because they do the same thing just automated and faster. Feed them a frame and you get the pictures saved on an SD card or directly onto your computer. But as mentioned, they where very expensive. Haven't checked in years...
A colleague asked me once if I have an idea how to digitalise Dias, and becak then they all where 1.000€+. But a local photograph shop had a scanner you could rent for a weekend for like 50€ or so. And he told me how it worked (and it was basically the fastest possible way)