Until the standard-size 35 mm cassettes came into use (Agfa 1932, Kodak 1934) film was supplied in many different forms - paper backed, paper leader and trailers, or in cassettes fitting a particular camera. Where cassettes were used they might be re-loadable in daylight or the darkroom from pre-cut refills or loadable from bulk film which had to be cut to length and trimmed at each end to fit the cassette. Both Leitz and Zeiss supplied templates to trim the ends of the film, other accessories included winders, used in the darkroom, to wind the film onto the cassette's core. Later 'daylight loaders' were available where the cassette could be loaded from a large spool of film.

Different forms of cassette were used:

• In one form the cassette consisted of two parts of a cylinder able to rotate relative to the other, in one position a wide opening would be formed through which the film could travel, in another position the opening closed making the cassette light-tight. The Leica and Contax cassettes are of this type.
• The arrangement that was to become most commonly used had a permanent slit with velvet light traps through which the film could be pulled. The early Agfa and Kodak 135 cassettes were of this type.¹
• The cassette for the early model Robot camera had a one-part case with a light trap consisting of a spring-loaded bar that was pushed open as the camera back was closed.²
• Mostly film was wound on a central core in the cassette, exceptions were the Agfa Karat (1937) and its predecessor the Ansco Memo (1927) where the film was simply pushed into the take-up cassette, the earlier Amourette also used this type of cassette.

A very popular cassette that would fit most 35 mm cameras of the period. A film loader (similar to the model from Leitz) was also available.