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  1. #1

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    Mamiya RB67 Polaroid back only get square images

    Have what I believe to be a Mamiya back, when using FP100c I only get the center square part exposed, is that normal?
    5x7 Eastman-Kodak kit / B&L 135mm Zeiss Tessar + Compur Deckel
    4x5 Graphic View, made in USA! New project
    RB67 Pro S /50 4.5 / 90 3.8 / 180 4.5 / WLF / prism finder / polaback
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  2. #2
    aRolleiBrujo's Avatar
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    yes

    Quote Originally Posted by j-dogg View Post
    Have what I believe to be a Mamiya back, when using FP100c I only get the center square part exposed, is that normal?
    I assume so, because the Polaroid is its own entity and not 6X7. Congratulations the the Polaroid back, I loved my own!

  3. #3
    aRolleiBrujo's Avatar
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    someone somewhere had explained the technical aspect of it all to me awhile back, however, I forgot it, though, if you see this image, you will notice that it is sort of partially covered, though, i forget why. its about the 6X7 and the Polaroids square opening or something like that?!
    Untitled by a.rodriguezpix, on Flickr

  4. #4
    aRolleiBrujo's Avatar
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    see the examples here as well!

    Spring by a.rodriguezpix, on Flickr



    Spring by a.rodriguezpix, on Flickr

  5. #5
    aRolleiBrujo's Avatar
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    However, I didnt notice this issue with my Rollei 6008 Pro, I assume since it was an actual 6X6 square sensor it covered the area correctly.


    a.Rollei.Brujo666-17 by a.rodriguezpix, on Flickr




    a.Rollei.Brujo666-14 by a.rodriguezpix, on Flickr

  6. #6

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    So there is pretty much no way to get full coverage on FP100c with an RB67?
    5x7 Eastman-Kodak kit / B&L 135mm Zeiss Tessar + Compur Deckel
    4x5 Graphic View, made in USA! New project
    RB67 Pro S /50 4.5 / 90 3.8 / 180 4.5 / WLF / prism finder / polaback
    Random 35mm stuff

  7. #7
    aRolleiBrujo's Avatar
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    Well, In a sense, that is the full coverage, since the formats are completely day and night! One being the 6X7 sensor of the RB67 and the other being the Polaroid back and its size limits. FUJIFILM FP-100C 3.25 X 4.25 Inches.

  8. #8

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    well....crap

    time to find a Polaroid 250 I guess.
    5x7 Eastman-Kodak kit / B&L 135mm Zeiss Tessar + Compur Deckel
    4x5 Graphic View, made in USA! New project
    RB67 Pro S /50 4.5 / 90 3.8 / 180 4.5 / WLF / prism finder / polaback
    Random 35mm stuff

  9. #9
    aRolleiBrujo's Avatar
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    Quote Originally Posted by j-dogg View Post
    well....crap

    time to find a Polaroid 250 I guess.
    Or 4x5 and/or 8X10! i'd love the 8x10!

  10. #10
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    1 inch=2.54 cm=25.4mm
    6cm/2.54=2.36 inch
    7cm/2.54=2.76 inch
    3.25-2.36= .89 inch/2=.445
    4.25-2.76= 1.49 inch/2=.745

    If your film holder has a 6cm x 7cm film gate and it aligns perfectly with the camera then you should get an image with a border 1.13cm x 1.89cm on each side.

    The film gate of the holder will limit the image size if it is smaller than the cameras image gate opening; the cameras image gate opening will limit the image size if it is smaller than the film holder film gate. Positioning of the film holder film gate with respect to the camera image gate opening will determine the border positioning.

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