I've been trawling the web for other possible (DIY) ways to digitise these tiny frames. Home-made telecine devices usually seem to consist of a modified projector then video camera frame grabbing to hard disk. Maybe a stepper motor frame advance and DSLR camera (with a macro lens) combo could do the trick, and at much higher resolutions.
Some folks out there have been using flatbed scanners or 35mm film scanners (There's a Nikon film scanner that takes strips of 16mm film too). Surely some manufacturer could make a high res. yet affordable scanner for digitising roll films.