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Thread: Schneider Hi End Back and Schneider Vacuum Backs

  1. #11
    the Docter is in Arne Croell's Avatar
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    Re: Schneider Hi End Back and Schneider Vacuum Backs

    That is the back, replacing the original ground glass frame on the camera using the Graflok adapter. It does have the blackout plate - that is the part with the two blue knobs. Suction/vacuum is produced by a rubber bulb which is attached to the small steel tube located in the upper right hand corner, below the Schneider-Kreuznach lettering. If the original one is not there, a replacement could probably be found.

  2. #12
    Drew Wiley
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    Re: Schneider Hi End Back and Schneider Vacuum Backs

    Vac holders are easy to make out of regular Fidelity or Lisco holders. One side is converted into the vac chamber, and holes are drilled through the septum. It's a bit more involved, but that's the basic concept, and they load the same as always, with just one sheet of film per holder rather than two. No need to switch out backs each time as in Graflok devices.

  3. #13
    the Docter is in Arne Croell's Avatar
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    Re: Schneider Hi End Back and Schneider Vacuum Backs

    The - at least theoretical - advantage of the Schneider vacuum holder vs. others was that it eliminated any variation and tolerances in ground glass position vs. film position, since the film was sucked onto the ground glass. The offset in that case is the film base thickness but that is quite small.

  4. #14
    the Docter is in Arne Croell's Avatar
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    Re: Schneider Hi End Back and Schneider Vacuum Backs

    Here are some images of the system, more to follow, showing the back with ground glass, rubber bulb, and detached cover plate; the back with cover plate installed; the film loading/ unloading jig; and one film holder.
    Attached Thumbnails Attached Thumbnails 9CEFC690-96DE-4C50-85D0-EFC07C518B6C.jpg   09087044-12A1-4855-9216-B087181F94CE.jpg   069C14A1-7248-488A-86F4-53CA9BA8A7A8.jpg   6F0418E3-7E5C-455D-AB1E-1D248A37498F.jpg  

  5. #15
    the Docter is in Arne Croell's Avatar
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    Re: Schneider Hi End Back and Schneider Vacuum Backs

    Some more pics: film holder with one internal clamping frame removed; clamping frame with film; frame and film holder in the loading jig; and the holder inserted into the back.
    Attached Thumbnails Attached Thumbnails 0C2CCEE0-A706-408B-A338-A8E7F173C4C4.jpg   47304ADD-4DBD-4CDE-91EE-F5CE02952E23.jpg   E650323E-13E1-4753-9A09-1B0EA0F6AD41.jpg   A98C9B78-99D4-4ED6-A75D-B107661A6EE4.jpg  

  6. #16
    the Docter is in Arne Croell's Avatar
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    Re: Schneider Hi End Back and Schneider Vacuum Backs

    And the final stage, the film pressed to the ground glass.
    Attached Thumbnails Attached Thumbnails 83E0EFEF-F4B0-4C1A-93A7-58A9A5C9F420.jpg  

  7. #17
    Tin Can's Avatar
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    Re: Schneider Hi End Back and Schneider Vacuum Backs

    Thanks Arne for images of the system

    A picture is far better than 1000 words
    sin eater

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