For anyone looking to do something similar a suitable harvesting product is this Allied Vision industrial camera that uses the same Kodak CCD.
They are also long since defunct of course but are available on eBay.
https://www.ebay.co.uk/itm/284133056331
I think the price seemingly on the high side is probably reflective of people looking to do a DIY Digital Bolex too but when you consider that a used D16 is not easy to come by and is well north of £5K then for someone determined enough this route is something of a relative bargain.
Pi 5 and its eco-system have now matured sufficiently to be able to handle the Allied Vision software in the intervening years so it’s definitely viable as a DIY project.
Not trivial of course but viable.