Roger Hicks (a Shutterbug Mag contributor) very kindly provided on
CompuServe this week a clear explanation of the difference between what the
ASA rating entailed and that of the ISO system. Despite the numerical
designations being the same, the methodology differs. And to show my
gratitude for his efforts, I promptly forgot his explanation.
Lex
(Serving life without parole for serial ignernce.)
----Original Message Follows----
From: "Keith Berry" <k.berry@xxxxxxxxxxxxx>
Lex wrote:
...(Sorry, all, I still think in ASA, not ISO, but I'm trying to
convert.)...
Films used to be separately marked in ASA and DIN speeds but now they're
marked 'ISO (ASA rating) / (DIN rating)'. I wonder how long it took some
committee to come up with that bit of progress? Can there be more to it
than that?
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