I'm into copying (old) slides, negatives and reflective/positive photo's lately. I use a Canon 40D with EF-S 60mm macro on remote live view with surprisingly good results, given that the slide/negative holder is a provisional, half-hour job. It is not suitable for reflective/positives, however, and it is mechanically unstable.
A copy stand would be great but the ones I've seen on the Internet so far a way too expensive Alternative might be 2nd hand copy stand or to modify a used enlarger. The goal is to have a solution that enables all three (so with rear- and front lighting, that I can provide myself) and precisely adjustable focus distance, ideally vertical.
Does anyone have experience with this? Any advise is welcome.