Nerdy question- you know the two wee v-shaped notches at the left off the negatives produced by some hasselblad A12 (and possibly others As and Es) backs. I have four A12- 2 mark III (~1990-96) and 2 mark IV (1997-201x) and these all have the notches. I used to have a couple mark II backs (~1969-1989) and none of these had notches- positive as checked the contact sheets from that period. Any idea when the notches have been introduced? Fairly sure that there are mark II backs that have notches but no idea of at what vintage these appeared.
Last edited: