Ten exposures. One totaly blank 120 roll.
Did I fix first? My one-shot fix is down the drain.
A clue may be the Acros 100's ID and frame numbers
well defined along one edge.
Maybe some mechanical quirk I've not noted? The film
advanced and on the take-up spool after the end of ten.
The previous few rolls have been OK. The RB-Pro S, IIRC,
has double exposure prevention and dark slide check.
What else? Mirror up and cable release. What have
I overlooked or forgotten? Dan