So, I’m in our old family home, and we stumbled on a file of old family photos (1870 to 1930). One of these is a rather small (10x7cm) negative glass plate (WW1 era, since it looks like my grandfather in uniform).
What is the best way to make a copy of it, given a decent SLR, tripod, variable weather, able assistant but no time and nearby store to make up a full-fledged negative copy stand? I assume I have to shoot it against some light? Should I use some diffuser?