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  1. #1
    brian steinberger's Avatar
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    Mamiya 6 Alignment, something I can do myself?

    Well I just got my two Mamiya 6 bodies back from MAC group for a second time and they are still not aligned correctly. The one body is prefect but the other is still out.

    Here's the test I did before and after to check alignment:

    I put the 150mm lens on body “1” on a tripod and focused at a line at 7' and took a photo and processed the film. The film was perfectly sharp on that line. Without moving the tripod I went back again, focused at 7' again, then while carefully taking off the 150 not to change the focus I put the lens on camera “2” and the patch was not agreeing. It wanted to focus at about 6 ½'.

    So what I need is for body marked “2” to be aligned to match body “1”. I sent it back to MAC group after the first alignment telling them exactly what I needed and they still couldn't get it right.

    So is this something I can do myself? I have also contacted KEH to see if they can do this. It would seem rather simple to me. Adjusting a simple cam inside until the patch in camera "2" matches camera "1". Since I have one body that's prefect I don't think I could mess it up as easily right?

    Anyone else done this? Or should I leave it to the specialists (or so-called specialists)?

  2. #2
    brian steinberger's Avatar
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    Its amazing at what 10 minutes of research can do on the internet. I found a few great articles on adjusting Mamiya 6/7 cameras yourself. So after feeling anxious and quite frustrated already. I took the cover off of camera "2" and saw the screws. One tiny fraction on a turn of the horizontal screw brought camera "2" into alignment with camera "1". UNBELIEVABLE!! I can't believe MAC group couldn't get this correct and I also don't understand why so many people discourage aligning these cameras themselves. All you need to be is gentle and patient. I guess it helps too that I have a one body that I know is prefect, so aligning the 2nd is simply a matter focusing on something close with the 150mm on a tripod with the good camera, taking the lens off being careful not to adjust the focus and putting it on the bad camera and adjusting the screw to make the patch line up horizontally.

  3. #3
    brian steinberger's Avatar
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    Well now that I have the close focusing agreeing with the good camera, infinity won't line up. This doesn't make any sense to me. Anyone?

  4. #4
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    With the lens on body 2 does did it it focus correctly before you adjusted it?
    Your methodology seems a little funny. You need to calibrate the rangefinder of each body individually with some kind of makeshift ground glass on the film plane.

  5. #5
    brian steinberger's Avatar
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    ic, what I did was I had one body, body "1" that is perfect with each lens, up close, at infinity, in between. When the cameras came back from Mamiya the two cameras agreed at far focus (beyond 10ft) but not closer than 10 feet. My test was I focused camera "1" on something close at 7' (knowing this focus is correct), I took the lens of camera 1 and put it on camera 2 (without moving the focus ring) and the patches did not line up. So from there I adjusted the rangefinder until the patches lined up. But now camera 2 will not line up focus at infinity. It's almost like a trade-off. Do you want to focus up close accurately or far away with camera 2? And it shouldn't be like this.

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    I understand your logic and your method but...

    Rangefinders and cameras are adjusted on a collimeter to infinity and ground glass tested throughout it's range of focus to be sure the film n viewfinders agree.

    Before adjusting anything...
    Have you checked it on a collimeter to be sure infinity is in focus on both cameras?

    Taking a lens off one without moving it is not a test of accuracy.

    Viewing a target side by side of identical cameras is not a confirmation, individual ground glass test is.

    After adjusting it... Have you actually tried putting a ground glass on the film gate to see if infact the image is in focus n still agrees with the RF?


    Since you say both cameras are identical... are the backs exactly the same? Check to see if one has a diopter of a different strength?
    Last edited by paul ron; 12-09-2010 at 09:24 AM. Click to view previous post history.
    Anyone can make a Digital print, but only a photographer can make a photograph.

  7. #7
    brian steinberger's Avatar
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    Paul I understand what you're saying, BUT if a lens is focused at 7 feet then it's focused at 7 feet. So if you're focused on a point at 7 feet then it shouldn't matter which body the lens is on it should line up in the viewfinder at 7 feet.

  8. #8

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    Problems with the alignment of the rangefinder in rangefinder cameras (any format) is one major point of consideration when chosing a camera type for your photography. My experience of rangefinders in this regard has been somewhat discouraging.

  9. #9
    MattKing's Avatar
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    Quote Originally Posted by brian steinberger View Post
    Paul I understand what you're saying, BUT if a lens is focused at 7 feet then it's focused at 7 feet. So if you're focused on a point at 7 feet then it shouldn't matter which body the lens is on it should line up in the viewfinder at 7 feet.
    What if there is a slight difference between the cameras with respect to the distance between the film and the front of the lens mount?

    Isn't rangefinder calibration designed to take the peculiarities of the camera into account?
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  10. #10
    brian steinberger's Avatar
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    Quote Originally Posted by MattKing View Post
    What if there is a slight difference between the cameras with respect to the distance between the film and the front of the lens mount?

    Isn't rangefinder calibration designed to take the peculiarities of the camera into account?
    Yea but if on one camera body it's telling you something is 7 feet away and you put that lens on the other camera and it's telling you it's 6 1/2 feet away, what accounts for the half foot difference?

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