Mamiya 645 Super shutter question.

[waynecrider]

I can operate the shutter with the back off but with an empty back in place the shutter won't release except at the 1/60 default setting. Dark slide out and new battery installed. Is this normal?

 

[Paul Sorensen]

Have you tried with it set to multiple exposure? That is sometimes needed to trigger an unloaded 645. Of course, I have no idea why it does shoot at 1/60. Do you have another back to test it with, in case it is a problem with the wiring in the back?

 

[JHannon]

My older M645 needs to be in multi exposure to fire. I am not too sure about the super with it's removable back.

 

[waynecrider]

Ok, it fires in multi position. I'll test it with a roll next.

Paul, the 1/60 is the default position that works when the battery goes bad. It's the yellow dot at the switch.

 

[Paul Sorensen]

Ok, it fires in multi position. I'll test it with a roll next.

Paul, the 1/60 is the default position that works when the battery goes bad. It's the yellow dot at the switch.

I recall, I never used it myself. I do wonder why that would make a difference, however.