Originally Posted by markbarendt
This ISO standard is the ISO standard, ask the ISO if you really want to know.
Further standardised digital camera meter do not really care about the format, it just suggests a value(shutter speed and aperture).
OM-1n: Do I need to own a Leica?
Rolleicord Va: Humble.
Agfa Isolette III: Amazingly simple, yet it produces outstanding negatives.