I've always wondered why films seemed to have identifying numbers that
bore no real relationships to size. I decided to go find out and
discovered this Wikiepedia page: <http://en.wikipedia.org/wiki/Film_format>
As it turns out they're nothing but a mostly sequential set of standards
numbers created by Kodak who invented almost all of the formats most of
which are now defunct. Check this statement and then go visit the page.
"Unless otherwise noted, all formats were introduced by Kodak, who began
allocating the number series in 1913. Before that, films were just
identified by the name of the cameras they were intended for."
Chuck Norcutt
Dan Mitchell wrote:
>>My apologies for nit picking, but it isn't a "120mm" camera, 120 is the film
>>size and it doesn't relate to a measurement of anything I know of on the
>>film. Same principle as the "4" in OM-4Ti.
>
>
> Sorry, of course you're right. After all, 220 film would also go in
> (most of?) these cameras, but the cameras aren't suddenly twice as big.
> And 110 cameras are much much smaller..
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