Using Mamiya RZ pinhole cap on body

Hello, I recently picked up a Mamiya RZ pinhole cap and have hit a problem trying to use and want to know if anyone has any experience using one on an RZ body. I guessed that attaching the cap to the body and setting the shutter to B would at least make the mirror flip up and then advancing the lever would lower it when the time for exposure had elapsed. When I tried this nothing happened, so wondering if I'm doing this operation correctly or if something else needs to be set on the body in some way. If anyone has any insights greatly appreciated. Also wondering if it's a situation where the mirror is locked up and the dark slide is removed and replaced to control exposure.

 

Thanks!

Edited July 13, 2018 by gregory_imler

The manual for the RZ67 is downloadable here.

Thanks, Joe. I have the manual and was looking through it and couldn't really see this issue come up. I believe it could be because the control between the body and shutter (in the lens) is electronic and not mechanical like the RB, and with no electrical contact with the pinhole cap, can't figure out what the body needs to be set to for the mirror to flip up. I'm pressing the shutter release and nothing happens. And the electrical override setting for the shutter is fixed to 1/400, which is too fast for pinhole work.

"I recently picked up a Mamiya RZ pinhole cap..."

 

When you say 'picked up', do you mean bought as first owner?

 

I believe the camera needs a lens attached for the shutter to release. So a pinhole cap that purports to be specifically for a Mamiya RZ ought to have electrical contacts to defeat the interlock.

 

If not, it's a bit useless and needs to go back.

Set the shutter speed dial to "RBL".

Ah, forgot about the RBL setting. I think that worked in combination with the body set to the multi-exposure M...the mirror flipped up. Might introduce some shake, but then using the advance lever to lower the mirror will stop the exposure.