Incidentally, just yesterday I tried the Acros / Rodinal combo for the first time. Based on my experience with other similar films I gave it 14 mins@20C/68F, 1:75. Gentle agitation: just 2 inversions every minute. The negative is on the 'thin' side, which I like. Sharpness is a killer, grain - non-existent. My estimated E.I. falls halfway between 50 and 100 ISO (no densitometer used). I'm looking forward to a great printing session.
Regards to all - Tomasz.