I have an ilex #5 shutter that can only be fired with my Prontor cable release. All my other (6) cable releases, which are not Prontors, will not fire the Ilex #5 shutter.
Specs for the Prontor cable release are: 10 inches long, clothed wrapped and has a 2 centimeter throw, which converts to approx. a 20 millimeter throw.
I hope this helps.
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