Originally Posted by Muggins
Out of curiosity, when did Leica begin to use "standard" 35mm cartridges? I believe that Nagel introduced them in about 1935, so obviously Leica had been going their own way for some years before they appeared.
I understand that it was the M cameras that used the slightly shorter Kodak design. I have copies of the Leica cartridges but also two Agfa cartridges for (as I understand it) loading with film packed like a 220. The Agfa cartridges can be loaded with modern 135 innards, but dark loaded and theres not much gain. The older designs will not fit in modern cameras designed for 135.
Great explanation at this link: