I have a Nikon CoolScan V ED that I use to digitise my 35mm transparencies. One of the file types it can save files in is .NEF. Superficially that is a RAW format but it’s not a normal .NEF, it is a CoolScan specific file type that in my experience is only readable by the Nikon Scan software*.
stuck
*if anyone here knows different, I’d love to learn!