Question about Mamiya RB67 Pro SD Medium Format Camera
1 - In MU on T - I fire the body the mirror drops but
the aperture is OPEN. When I use the cable release on
the lens to fire the shutter nothing happens and the
aperture will only close using the cocking arm on the
2 - In MU at all speeds - I fire the body, the mirror
drops and the aperture is OPEN. But this time I can
close the aperture using the cable release on the
What should be happening is that I fire the body, the
mirror drops and the lens aperture is closed until I
fire the lens with the cable release right?
From your description, Yes. All RB67 lenses have common problems, usually sticky blades. Since there are 2 sets of blades, (shutter and aperture), the shutter blades may be contaminated with oil/debris
Posted on Apr 19, 2008
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Posted on Jan 02, 2017
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