RB67 or RZ67?

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Donald Qualls

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2) on the RZ67, the electronic shutter timing triggers the close-down.

Okay, now I'm curious how that works with an RZ67 using RB67 lenses. The lens operates fully mechanically as it would on the RB? Seems like it has to, based on the linkage between body and lens...
 

MattKing

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This is what happens when one doesn't fully quote the post(s) one is responding to.
I took this post of Alan's as referring to the shutters in the RZ lenses:
So why would the RZ shutter be more reliable if the time it's open is mechanically timed?
And in this response, I should have posted...
The shutters open up mechanically. Then they stay open until:
1) on the RB67 lenses, the mechanical shutter timing triggers the close-down; and
2) on the RZ67 lenses, the electronic shutter timing in the camera triggers the close-down.

Okay, now I'm curious how that works with an RZ67 using RB67 lenses.

It doesn't. The mechanical timing system in the RB67 lenses handles the job, and of course you set the shutter speed on the lens, not on the camera.
 

flavio81

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So why would the RZ shutter be more reliable if the time it's open is mechanically timed?

"Mechanical" = "More reliable" is a myth that should die, the sooner the better.

There are satellites out in the space working for years non-stops. I can assure you their control systems are not made using gears and levers.

Professional electronics are as reliable as they need to be.

I've owned many Mamiya RB67 lenses with the mechanical Seiko shutter and even more Bronica ETR lenses with the exact same Seiko electroniic shutter used on the RZ lenses (albeit in a different size). The latter have not given me any problem in years. The former, yeah as any mechanical shutter it will require periodic service if you don't want it to seize.
 
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This is what happens when one doesn't fully quote the post(s) one is responding to.
I took this post of Alan's as referring to the shutters in the RZ lenses:

And in this response, I should have posted...




It doesn't. The mechanical timing system in the RB67 lenses handles the job, and of course you set the shutter speed on the lens, not on the camera.

How do you set the shutter and aperture on an RZ67 with RZ lenses? Can RZ's set exposures automatically?
 

MattKing

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Donald Qualls

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There are satellites out in the space working for years non-stops. I can assure you their control systems are not made using gears and levers.

I don't think this is a valid argument in favor of electronics in cameras, mainly because if our cameras were built to NASA/ESA specs, there would be only a few dozen in operation at any given time (with a few more in multi-year construction process) and only governments and megacorporations could afford to buy and ship one (but we won't count those point & shoot models SpaceX has been flooding LEO with). And let's not forget, NASA has been examining wholly mechanical systems for a Venus rover, since there's no way (even now, decades after the original Soviet landers) to keep electronics functioning in that environment for more than a few minutes.
 
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Arthurwg

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I have it on good authority that many parts for the RZ are now unobtainable, and long term the RB SD is the best bet. I did have an electronic camera that I loved fail on me and it can't be repaired.

BTW, I did find that Emulsive.Org has an amazing four-part rundown on the RZ system.
 

MattKing

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So how does an RZ67 work with RB lenses?

From the RX67-ProII manual:
1660352608047.png
 

JamesEsq

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I just bought my first RZ67 with the AE prism meter, it's hard too imagine an RB67 is heavier!
 

Donald Qualls

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Where else can you get a professional grade camera and a gym membership for one price?
 

Neil Poulsen

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Years ago, I lucked into a collection of multiple RZ and RB bodies, multiple lenses, and accessories for only $700. Because of the electronic shutters, I was ready to keep the best of the RZ equipment and sell all the rest.

My repairman talked me into keeping the RB equipment instead, given his description of the internal complexity and build quality of RZ systems. I followed his advice and kept an RB67 Pro S system. I also had him do a CLA on that camera. The CLA was a good idea, based on what I've since heard about these older cameras.

I never did have a problem with that RB67 Pro S camera. It's also the case that I never used it.
 
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awty

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Speaking of RZs not working, I have one with an intermittent power problem. Often won't fire and the warning light flickers.
I think it may be just a bad connection somewhere, will do a better look over once a new battery arrives. Could possibly be a dying capacitor.
My question is I can find the wiring diagram, but can't find a circuit board diagram, does anyone know if there is one?
 
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