Canon A1 dark corners on focusing screen

Discussion in 'Film Discussion and Q & A' started by Owen Shelton, Jun 16, 2020.

  1. Owen Shelton

    Owen Shelton TPF Noob!

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    Hi everyone
    I have recently purchased a Canon A1
    When looking through the viewfinder, the four corners appear to be getting darker progressively over time. As a result of this, I removed the focusing screen and noticed darkness on each corner as expected. I have fitted a new focusing screen and now it too also appears to be getting darker on the corners as before? Any advice or suggestions would be greatly appreciated as someone new to film photography! Kind regards Owen


     
  2. Derrel

    Derrel Mr. Rain Cloud

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    Never heard of such an occurence. No idea what to tell you to do. Except to ask Damien for a refund.
     
  3. compur

    compur Been spending a lot of time on here!

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    Have you tried cleaning the screen?
     
  4. Owen Shelton

    Owen Shelton TPF Noob!

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    It’s an odd one isn’t it!
    When I took out the old screen, I gave it a little clean. It seemed to get rid of most of the darkness all though not all of it. I’ve uploaded a picture of what I can see currently. It’s not too bad at the moment, although I am worried it will become progressively worse.
    I thought it must have just been a fault with the lens at first, so I tried the FD mount 28mm and 50mm lenses on my Canon t70 and that works perfect.
    Thanks again guys
     

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  5. tirediron

    tirediron Watch the Birdy! Staff Member Supporting Member

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    Going out on a limb and taking a WAG here, but could it be made of two pieces glued together with the glue in the corners beginning to fail? I had a screen for my old Miranda that actually completely separated.
     
  6. Owen Shelton

    Owen Shelton TPF Noob!

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    Just opened it up again to have a look, it appears to be an oily substance. Connecting up the dots, I assume what has happened is the previous owner has perhaps over oiled the camera when getting rid of the ‘canon cough’. Any ideas for moving forward? Seems such a shame for an otherwise good camera to go to waste!
     
  7. webestang64

    webestang64 Been spending a lot of time on here!

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    Other than having annoying oily dark corners to clean once in awhile, if it were me, I'd just use the camera.
     
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  8. compur

    compur Been spending a lot of time on here!

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    ^ +1

    Yes, if the camera works and the lube doesn't get on the film I would just clean the area as best you can and go ahead with using it.
     
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  9. Owen Shelton

    Owen Shelton TPF Noob!

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    I think you’re right guys, it’s only affecting the focusing screen so it shouldn’t affect the film. It’s just a bit frustrating but not the end of the world!
    Thank you all for your help! I really appreciate it!
     
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  10. Derrel

    Derrel Mr. Rain Cloud

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    Over-oiled the camera...strange idea...but given how some people are...I suppose a possiblity.
     
  11. compur

    compur Been spending a lot of time on here!

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    I've done it. :D

    Not hard to do on those damn squeaky Canons.
     

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