Since I have the time and good equipment I thought I might try this myself?
Actually, before scanner were available, the only way to reproduce slides and negs was photographing them. There were special films as well for reproduction. Canon had a repro adapter to be mounted on its bellows, coupled with a macro lens, it also allowed for "cropping" a slide. I still have the bellows, I guess I should look for an EF-FD macro adapter and the repro accessory
IMHO with a good setup you can obtain results far superior than most scanners, although it's a slower technique.
Beware of some low/medium range scanner offering "slide/negs adapters", they may return so-so results.
For lightning any good, homogeneous, stable source will be enough - once there were even enlarger "color heads" used to correct casts on images, but now you can easily correct whatever in post-production.
Also ensure the neg/slide is flat when you take images of it - often they are not.