I read in this form somewhere that Doctor's PA asked for the negatives of the photograhs before conducting Medical examination.
Since I got my photographs snaped with digital camera, I was worried what happens if someone does not have negatives.(I do have the code no. issued by the Photographer)
As far as I know, there are no Negatives required, at least they didn't asked me. If a digital photo is taken according to the specification and comply with CIC requirement, then I don't see a reason it could be a problem. Actually when I went, my photos were taken from a digital camera as well but not at home, it was done at professional photo studio but with digital camera.