In message , StephenC
writes

Another solution to get slides into digital format is to re-photograph
them, with a suitable back-lighter,

That's the crunch part isn't it

with a digital camera. However,
I do not know if such devices are available, although they were made
for pentaxes and similar SLR film cameras. Providing the camera has
close enough focus, it should be possible to make one. I recently had
some 4 by 3 inch glass plate negatives done this way, with good
results, although this with a Nikon digital camera. I also have an
Epson 1670 scanner, which came with a 35mm slide and neg. attachment,
good for the money - £80.


--
geoff