Switch on my shutter/ lens....

Discussion in 'Large Format Cameras and Accessories' started by Pfiltz, Feb 20, 2013.

  1. Pfiltz

    Pfiltz Member

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    I have a Graphic View 4x5. I've shot it using studio strobes in the past. Not many times, but I have. I use pocket wizards to fire the strobes via the two post on the lens, using alligator clips cabled to my PW.

    I shot a girl the other day in the studio with it, and developed the film today. Just blank pieces of film came out.

    I don't think there is a polarity thing with regard to those two post on the lens, because I can switch the alligator clips and the strobes still fire. I know for a fact, I did take the dark slide out on both shots.

    The shutter has a switch that goes from Fx, M, M. One of the M's is red. That's the one I used. Was it the wrong one?

    What are those 4 settings for anyway? I can't tell you what shutter / lens I have, since I'm home right now. Was more curious than anything.

    Any info you can shed on this, will be greatly appreciated.
     
  2. brucemuir

    brucemuir Member

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    You want X sync for electronic flash.
    M is for M series flashbulbs of yore…

    Try this for fun.
    Take the back off and set your lens to 4.5 or whatever the widest is.
    Fire your shutter with strobes connected at a white wall and observe through the lens from the rear with the sync switch on different settings.

    The M has a delay so it allowed the bulb to burn up to full intensity.
    A strobe is instantaneous so the shutter opens too late with an M setting.
     
  3. Pfiltz

    Pfiltz Member

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    Thank you Bruce.
     
  4. Jeff Searust

    Jeff Searust Member

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    I have done the same thing -- X is for Excellent, M is for Moron--- and this switch is found on a LOT of lenses. I know Mamiya all have it.
     
  5. mopar_guy

    mopar_guy Subscriber

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    The word excellent starts with an "E", not an "X". It sounds like a Wollensack shutter with the delay for synchronization of flash bulbs.

    The "F-X" setting is for "Fast" peak flash bulbs or for electronic flash. In this setting, the flash contact is closed as soon as the shutter is open.
    The "M" settings delay the shutter from opening after the flash contact is closed and they are meant to synchronize "Medium" peak flash bulbs.
     
  6. vpwphoto

    vpwphoto Member

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    ... sad.. When in doubt read the manual!
    Same for my friend who keeps asking me what the buttons do on his car (that I have a similar one of) I say read the manual!!
    My dad taught me about those switches on an old Ansco Regent he gave me to use in 1979.

    You will see the "M" would have worked if you had the shutter set to perhaps 1/30 or for sure 1/15. Do the test mentioned above.
     
  7. Pfiltz

    Pfiltz Member

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    Thanks...

    It is a Wollensack. I've used it before in a studio enviroment, but for some unknown reason, I switched the damn thing to M ... :wink:

    Brain fart
     
  8. Jim Jones

    Jim Jones Subscriber

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    No, the flash would have triggered about 20ms before the shutter was fully open. As suggested above, do the test. Routinely do it before any shoot.
     
  9. E. von Hoegh

    E. von Hoegh Member

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    And I'll add to that, make it a routine regardless of what gear you are using. Want to trash a dozen sheets because that PC plug wasn't seated in the jack?:wink: