Caring for RB67 lens...

cepwin · Apr 9, 2013

I originally got 65mm lens with my RB67 and after roll or two of film it quit working. KeH sent me 90mm lens as a replacement. My question is caring for the new lens so it doesn't suffer the same fate (the old one would close but not reopen for the exposure.) Is it safe to leave it attached to the body when not in use? It doesn't seem to be an issue on any of my other cameras. I there something I could have possibly done that caused the lens to fail? It seemed to fail after one shot on my third role. I do have lens cap and a back lens cap if it's not on the body.

Alan Klein · Apr 9, 2013

Releasing the shutter is suppose to be done when not using the lens. But I doubt if that was the reason the lens failed so quickly. Sounds like a bad unit.

cepwin · Apr 9, 2013

OK...Thanks...that makes sense...takes the pressure off of it

tkamiya · Apr 9, 2013

Mamiya recommends tripping the shutter and store it in uncocked state IF you are going to store it for long time. Problem is, documentation does not define what constitutes a "long time." I don't do anything special to mine.

Shawn Dougherty · Apr 10, 2013

Unless I'm out in the field using them all my RB67 lenses remain uncocked. It's simple and takes the pressure off, so why not?

edcculus · Apr 10, 2013

I've only had mine for a short while, but so far I leave it attached to the body uncocked. If it gets cocked while on the body and no picture is taken, I'll take off the back and trip the shutter, then put the back on again.

Alan Klein · Apr 10, 2013

You don't have to take the back off if you have the dark slide in place on the back. That will block exposing the film too.

Andrew K · Apr 11, 2013

Ised to repair RB lenses (and Blads, plus a few others) for a living, and honestly, if the lens is in good condition (in other words has had a proper service in the last few years where worn out bits like the mainspring were replaced) then it doesn't matter if it's stored cocked or uncocked.

As for "long term" storage - I'd call leaving a lens sitting in a cupboard for 6 months or more long term...

Cheers

Andrew

paul ron · Apr 11, 2013

Your old lens may have just needed a CLA n all would have been good again.

Also these lenses like to be excersized every now n again to keep em in working good order. If you are storing for a long period of time say a few months leave it uncocked as others already recomended. On n off camera makes no difference. Store your lenses n zip loc bags with a small packet of silica to keep moisture under control.

BTW why a 90 in place of a 65? I'd rather have the 65.

Good luck with your new to you camera n burn lots of film.. so lets see some pics now?

paul

cepwin · Apr 11, 2013

Thank you all for your advice! It sounds like I just got a faulty or worn out one first.

Caring for RB67 lens...

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