On 12/26/2012 3:33 PM, William Robb wrote:
On 26/12/2012 2:23 PM, John Francis wrote:



I remember film (and exposure meters) with ratings in both the ASA and DIN systems.


Yup, Tri-X Pan film (for example). 400/24. My mentor made a point of ensuring I was able to use both the American system and the German system.

The specification for ISO is basically ASA/DIN but everyone seems to forget the DIN part.

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