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Thread: Graflex Pacemaker Speed Flash Sync

  1. #11

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    Re: Graflex Pacemaker Speed Flash Sync

    The Bible, 10th edition, says:

    The larger focal-plane shutters, up to 4x5 inches, require the use of the bigger Class FP lamps, the G-E No. 31 and Sylvania's 2A. These have a burning time of nearly 70 milliseconds and will cover the entire movement of the 4x5 focal-plane shutters at their higher speeds, in any case.
    Further on this point, The Pacemaker Graphics Instruction And Reference Manual says to use GE or Westinghouse #31 or Sylvania #2A bulbs with 3x4 and 4x5 Pacemaker Speed Graphics' focal plane shutters at speeds of 1/250, 1/500 and 1/1000. 1/500 should be used
    only when uniform density cross the entire negative is not of primary importance.
    And there you have it, OP, from the horse's mouth.

  2. #12

    Re: Graflex Pacemaker Speed Flash Sync

    Quote Originally Posted by Dan Fromm View Post
    The Bible, 10th edition, says:



    Further on this point, The Pacemaker Graphics Instruction And Reference Manual says to use GE or Westinghouse #31 or Sylvania #2A bulbs with 3x4 and 4x5 Pacemaker Speed Graphics' focal plane shutters at speeds of 1/250, 1/500 and 1/1000. 1/500 should be used

    And there you have it, OP, from the horse's mouth.
    Thank you that explains it. Much appreciated.

    The bible 10th edition? Is there a book I should be reading?

  3. #13

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    Re: Graflex Pacemaker Speed Flash Sync

    Graphic Graflex Photography.

    If you're going to use any of the cameras you should get the book. 10th edition or later. If you keep your Pacemaker Speed Graphic, download the Instruction and Reference Manual from https://www.pacificrimcamera.com/rl/rlgraflexmisc.htm

  4. #14
    Jim Jones's Avatar
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    Re: Graflex Pacemaker Speed Flash Sync

    The 10th edition of Graphic Graflex Photography covers the top rangefinder Pacemaker series (Crown and Speed Graphic). You'll need the 11th edition for complete coverage of the later top rangefinder models. The 8th and earlier series is fine for the older Anniversary models, and have some articles by the great experts of that time.

  5. #15
    Tin Can's Avatar
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    Re: Graflex Pacemaker Speed Flash Sync

    I recently bought Photographers Mate 3 & 2 Bureau Of Navy like this in better condition for less

    https://www.abebooks.com/servlet/Boo...-srp1-_-title4

    I find it very useful with extreme detail how to use it, even a way of holding the camera best, that is not obvious, at least to me...
    sin eater

  6. #16
    Tin Can's Avatar
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    Re: Graflex Pacemaker Speed Flash Sync

    Page 290 fell open just now and has solved my Grafmatic mistake...

    same as my Mag Bag mistake...

    It illustrates many 'obvious' techniques
    sin eater

  7. #17

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    Re: Graflex Pacemaker Speed Flash Sync

    Which edition do you have? I have 1968 and agree it’s the best guide available. I had a 1973 edition that no longer had LF but had a very instructive aerial photography section. Not sure what earlier versions may exist or what they may cover.

  8. #18
    Tin Can's Avatar
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    Re: Graflex Pacemaker Speed Flash Sync

    1966
    sin eater

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