Film Speed vs ISO ?

[srtiwari]

I was just loading my Bronica RF645, and the manual showed me this table. I had assumed the ISO and the setting on the Film speed dial would be the same number. So why the offset ?

 

[Nikon Bob]

I think it is just the way it was printed if I get what you are saying. Between normal ISO speeds there are 2 in between ones corresponding to the two hash marks on the film speed dial scale.

Bob

 

[srtiwari]

You are probably right, Bob, since the ends of the scale match up. Silly not to think of it. Goes back to 'Occam's razor', I guess- often paraphrased as "All other things being equal, the simplest solution is the best."