Mamiya c220 focus issue

Discussion in 'Medium Format Cameras and Accessories' started by yadzmk, Oct 7, 2012.

  1. yadzmk

    yadzmk Member

    Messages:
    7
    Joined:
    Apr 24, 2012
    Shooter:
    35mm
    dear all,

    i just bought a clean and working normally mamiya c220 with 105mm f/3.5 taking lens.Soo i inisiate to test it with a delta 100 to try first roll.after taking 12 shot, i developt the negative.But surprisely all the result was a miss focus image, but im sure i was focussing perfectly altough the focusing screen still in good condition and focusing mechanic still working smoothly.

    then i recheck the condition from the lens, below dan film chamber.all seems in good condition.then i test it with second roll, and the same result i get like the result before.

    does anyone got the same experience like me?? i need an input here..thanks in advance before.
     
  2. BMbikerider

    BMbikerider Member

    Messages:
    830
    Joined:
    Jul 24, 2012
    Location:
    County Durha
    Shooter:
    35mm
    Can I suggest you check that the screen is seated correctly. They are interchangeable and can be put back in the wrong position. Also if you remove the screen, check the mirror, this may also have been removed at some time and not put back in the right position. is the pressure plate on the back of the camera in the correct place. too? If the image shows 'in focus' when you are taking the picture and on the results on film it are not then these ares practically the only things that can be out of position.

    I doubt very much if the lens has anything to do with it.
     
  3. yadzmk

    yadzmk Member

    Messages:
    7
    Joined:
    Apr 24, 2012
    Shooter:
    35mm
    Preasure plate indicator(the red dot) on the 120 not in the 220 and film type outside the body pointing to 120 too.

    Can you show me a reference the correct mirror and the screen position.
     
  4. Rick A

    Rick A Subscriber

    Messages:
    7,420
    Joined:
    Mar 31, 2009
    Location:
    northern Pa.
    Shooter:
    Multi Format
    Open the camera back and place a piece of waxed paper over the film plane. Focus the camera through the view finder then check the "ground glass" in the back to see if they match
    If the focus is off, then remove the view finder and check the screen to see if it is mounted correctly
    If it is on properly then the problem may be a mirror out of alignment(doubtful) or a bad lens.
     
  5. paul ron

    paul ron Member

    Messages:
    1,864
    Joined:
    Jan 22, 2004
    Location:
    NYC
    Shooter:
    Medium Format
    Rick, That is an excelent way to check the focus problem.

    NOTE---->If the image on the film plane is out, the screen height can be adjusted to bring it in focus with the taker lens. Sometimes the viewing lens/ viewing screen, is slightly out of adjustment... but only do this if ALL your lenses are out of focus. If this is the only lens doing this, then the viewing lens or taker lens needs to be adjusted.

    Sometimes people install bright screens which are focused to the camera. Then when the camera is sold they pop in the old screen without readjusting the focus.

    .
     
  6. PeterB

    PeterB Subscriber

    Messages:
    643
    Joined:
    Apr 3, 2005
    Location:
    Sydney, Aust
    Shooter:
    Medium Format
    Last edited by a moderator: Oct 8, 2012
  7. yadzmk

    yadzmk Member

    Messages:
    7
    Joined:
    Apr 24, 2012
    Shooter:
    35mm
    speechless :sad:
     
  8. yadzmk

    yadzmk Member

    Messages:
    7
    Joined:
    Apr 24, 2012
    Shooter:
    35mm
  9. Jojje

    Jojje Member

    Messages:
    110
    Joined:
    Sep 4, 2006
    Location:
    Finland
    Shooter:
    Multi Format
  10. grahamp

    grahamp Subscriber

    Messages:
    960
    Joined:
    Mar 2, 2004
    Location:
    San Francisc
    Shooter:
    Multi Format
  11. yadzmk

    yadzmk Member

    Messages:
    7
    Joined:
    Apr 24, 2012
    Shooter:
    35mm

    dear grahamp,

    ofcourse i already able focusing in the edge of center spot..before i using c220, i already use roleiflex and rolleicord..and im courious using c220 but when im occupied it...comes this issue..and yet im still not starting to test focusing testing with the papper simulation..because i dont have any experience on mamiya system
     
  12. fenderslash

    fenderslash Member

    Messages:
    41
    Joined:
    Oct 9, 2008
    Location:
    Townsville,
    Shooter:
    Medium Format
    I had similar problems with a 135mm lens. I never got to the bottom of the problem, but it was only with that one lens so I suspected that it was a previous amateur repair job gone wong with the elements replaced backwards or something. I'd suggest that you beg, borrow or steal another lens to try out. That way you could at least narrow it down to either a lens problem like I had, or a camera problem.

    There are a couple of focus issues that arise due to the removeable/interchangeable focus screens on the C330 series (mine is a C330f), but if my memory is correct the C220 doesn't have interchangeable screens (someone correct me if I'm wrong), so in your case I think a screen problem would be less likely.
     
    Last edited by a moderator: Oct 10, 2012
  13. yadzmk

    yadzmk Member

    Messages:
    7
    Joined:
    Apr 24, 2012
    Shooter:
    35mm
    Its goin more complicated..

    Maybe I will sell it..to solve it :sad:
     
  14. grahamp

    grahamp Subscriber

    Messages:
    960
    Joined:
    Mar 2, 2004
    Location:
    San Francisc
    Shooter:
    Multi Format
    It is not so much complicated as that there are a lot of variables, and you need to isolate one at a time.
    Corrected eyesight (more of a problem than people with good eyesight realize - a loupe does not correct for astigmatism)
    Screen - right position, right way up
    Mirror - displaced (unusual, but possible)
    Lens pair misaligned/not shimmed
    Lens board not parallel to film plane

    A second lens helps isolate the lens pair as the problem.
     
  15. benjiboy

    benjiboy Subscriber

    Messages:
    8,540
    Joined:
    Apr 18, 2005
    Location:
    U.K.
    Shooter:
    Multi Format
    If the worst came to the worst, you could take it to a professional camera repairer.