Indeed... my oldest brother & I went to my parents' in March for a couple of weeks (Father, 77, had had emergency heart surgery... 5 bypasses... and needed help the first little while - he is now walking nearly a kilometer, twice a day, better than he has in years).
While we were there, by brother decided to copy the old slide (transparency) pictures my father had taken in the 1950s/60s.
He had purchased a "slide scanner" for his computer, but it was bollocks... it turned all the pics blueish and dark.
So, we dug out the projector & screen, set them up in the basement, played with the settings on his $400 Canon digital camera, and started snapping shots of the projected film.
They came out perfectly... as if they were the originals!
I've used my $100 Nikon digital to snap shots of paintings & photo prints, and they come out fine... as long as you remove any glass/plastic covers and set up your lighting to avoid glare & reflections.