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  1. #11
    Pragmatist's Avatar
    Join Date
    Oct 2005
    Bath, NY
    Medium Format

    What they said

    What Nick & John have said is the case. Many older camera and studio flashes may route anywhere from 20-250 volts through the shutter sync contacts. Not a problem with most older cameras, disaster for new digital and film boxes. The Safe Sync is the solution to that problem. I have one that I use inline with my old Photogenic AA01-A power pack to reduce any potential for arcing, pitting, or welding. Too many lenses and cameras that parts are no longer available for.

    Here is a good resource for determining the sync voltages of various flash systems:


    On the RZ due to the sync being in the lens, most of these should not be a great consideration, but the safesync is not a bad deal, again to reduce pitting and other problems.
    Last edited by Pragmatist; 06-25-2006 at 11:52 PM. Click to view previous post history. Reason: brane fart

    something witty and profound needs to be inserted here...

  2. #12
    Lopaka's Avatar
    Join Date
    Apr 2006
    Multi Format
    I don't see a problem with any of the low voltage units (6-volt and 9-volt). The problem with the Cannon flashes is they have an automatic 'sleep' mode and wake up when you focus the camera. Not going to happen on the RZ. I found that if I used the Cannon on another camera, I always had to manually switch the flash back on to shoot. Since the RZ has no TTL or such, you have to use the flashes in manual mode. I think voltage to the camera is a higher risk with the high-powered portable units like Quantum, Lumedyne and Norman. Even though the circuitry is supposed to limit voltage received by the camera, a safe-sych filter is a wise investment. I once had the synch contracts burned to a cinder on a Mamiya TLR when a studio rat plugged a cord in the wrong place and sent 120 volts to the camera. Not too expenseive there - but a major financial disaster on electonic cameras like the RZ. An EX+ replacement from KEH is cheaper than a repair.

    To answer the question - yes it will work. But unless your unit (newer than mine) has a way to disable the automatic sleep mode - it is a pain. The RZ does have a hot shoe on the side - gets in the way of a bracket though. Cannon makes a 'hot shoe relocator' cord (not sure of its correct name) while it has the circuitry to manage the Cannon auto functions, it actually does work on the hot shoe of other cameras if all you need is synch trigger. I have used it with Metz low-voltage units on the Mamiya. Strictly manual mode - but if you are shooting MF you shouldn't expect the camera to do your thinking for you. (The 645 Pro-TL and 645AF support TTL but it doesn't come cheep - proprietary interfaces that cost as much as a flash unit!)

    "I always take a camera, That way I never have to say 'Gee, look at that - I wish I had a camera'" -Joe Clark, H.B.S.S.

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