Hi all...

I seem to be having trouble with my Mamiya 7 using a cable release with the bulb setting, and can't find what I'm doing wrong.

I set on bulb, insert the release, cock the film advance but when I release the cable nothing happens.

It seems if I press the shutter button and then release the cable, I can get it to work...

Any thing I'm missing here?

{I've never used bulb on this camera before...)