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Agfa Rapid Film cassettes
What film goes in which cassettes?
The following table is the product of an academic exercise to determine the correlation between film speeds and Rapid Cassette T-bar tab lengths; for anyone (including myself) who wishes to load the correct 35mm film into a Rapid Cassette.
In the absence of such an information table on the Internet, I have proceeded on the basis that there is a simple arithmetic progression linking film speed and tab lengths, and that information gaps can be extrapolated working from the givens that: A films had a speed of 25 ASA; and the highest film speed available was 400 ASA, designated by the letter N, with a tab length of 6mm.
I thought to look at Rapid camera instruction manuals, but the only ones I can find either specify the use of 100 ASA film, or say nothing on the matter. Rapid camera instruction manuals have proved elusive too.
This approach works but for a few anomalies.
- Some published data conflicts with expectations. My Fujica Rapid S2 came with an empty
Ecassette, which has a tab length of 2.5mm where 2.0mm was expected.
- The Alpha sequence is one letter longer than expected.
* Where a website has stated the film speed for a letter code.
|DIN||ASA||Expected letter code||Published letter code *
(for film speed)
|Expected Tab length||Published Tab length|
|15||25||A||✔ A and ✖ B||0.0mm|
|17||40||C||✔ C||1.0mm||✔ 1.0mm|
|18||50||D||✔ D||1.5mm||✔ 1.5mm|
|19||64||E||✔ E||2.0mm||✔ 2.0mm|
|20||80||F||✖ E||2.5mm||✔ 2.5mm|
|21||100||G||✔ G||3.0mm||✔ 3.0mm|
|24||200||J||✔ J and ✖ K||4.5mm|
|27||400||M||✖ N||6.0mm||✔ 6.0mm|