My Mamiya rb67 shoots only on one shutter speed

stevewastaken · Jul 25, 2023

Hi there,
I recently piccked a mamiya rb67 with a 90mm and 150mm lenses up. I testetd the shutter speed with no film inserted and it sounded the same , across the different speeds. ( I tested it with the 90mm lens) Is this normal and does this camera need to have a film in it, so that the shutter speeds work or is it a biger problem?

Don_ih · Jul 25, 2023

The shutter is in the lens and controlled by the lens. The camera itself only sets it off. So, if your shutter only runs at one speed, it's because the lens needs service.
Edited to add: You may be confusing the mirror moving with the shutter. When you fire the camera, the mirror flips up, then the shutter trips. The mirror always flips up the same.

stevewastaken · Jul 25, 2023

Don_ih said:
The shutter is in the lens and controlled by the lens. The camera itself only sets it off. So, if your shutter only runs at one speed, it's because the lens needs service.
Edited to add: You may be confusing the mirror moving with the shutter. When you fire the camera, the mirror flips up, then the shutter trips. The mirror always flips up the same.

thanks for the help but i figured it out it was just my own stupidity

xkaes · Jul 25, 2023

Sounds like you need a user manual.

https://www.butkus.org/chinon/mamiya/mamiya_rb67_professional/mamiya_rb67_professional.htm

stevewastaken · Jul 25, 2023

I forget to switch the knob from

xkaes said:
Sounds like you need a user manual.

https://www.butkus.org/chinon/mamiya/mamiya_rb67_professional/mamiya_rb67_professional.htm

thanks

Don_ih · Jul 25, 2023

stevewastaken said:
i figured it out it was just my own stupidity

That's cheaper than getting the camera fixed but can itself be very hard to fix....

Arthurwg · Jul 25, 2023

I think my RB sounds the same at all shutter speeds. Take off the back and have a look as you release the shutter with a cable release. I'll be they work correctly.

SodaAnt · Jul 25, 2023

Try tripping the shutter with the mirror locked up. Then all you hear is the quiet click of the shutter. Shutter speeds faster than about 1/30 second will all sound the same, but you should hear a distinct difference in the slower speeds.

My Mamiya rb67 shoots only on one shutter speed

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