The problem with the lens I have the problem with is it only has one aperture marked (f22), and it doesn't stand out greatly as well. Using 'wide open' as a reference point would be easier but it a little movement after what I think is supposed to be the wide open stop which confuses my counting, combined with it's max aperture of f9 which adds confusion to the counting process... and I end up all confused! I usually make sure it's right before getting paper out, but a couple of time have had to put it back in the paper safe and recheck. The torch idea might work so will give that a try!
Originally Posted by Deckled Edge