Repairs and Cleaning

Cleaning the dust out of a Konica Big Mini Lens

Konica Big mini repair

I picked up a Konica Big Mini from a charity shop today for the very reasonable price of £5. Pleased!
It did have a very unsightly accumulation of dust in the lens, or at least behind what appears to be some sort of filter, or lens protector on front. I was a little concerned initially, but it turned out to be two screws and a very quick job.

Konica Big Mini

There are two screws, one either side of the extended lens.

Konica Big Mini

Unscrew these and pull the front part of the lens off. Bit of a blow and a wipe and all the nasty little bits of fluff were gone!

Konica Big Mini

Put it back together and I have a nice clean lens!

Konica Big Mini

Im looking forward to trying this camera out, I’ve read a lot of very positive opinions on it. I shall post my thoughts as soon as I have had a chance to run a film through it.

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20 Comments

  • Reply
    Cleaning a Konica Big mini lens ...
    June 16, 2013 at 6:20 pm

    […] I gave it a little bit of a clean. Konica Big Mini by Hamish_Gill, on Flickr have a looksee here Cleaning the dust out of a Konica Big Mini Lens im genuinely chuffed to have found one of these, it is supposed to be at very least on a par with […]

  • Reply
    Konica Big Mini – Yeah, it’s not bad …
    July 8, 2013 at 9:51 pm

    […] I did a little write up on cleaning the lens of this camera, so if you have bought one and its a little dusty in the lens, have a look here. […]

  • Avatar
    Reply
    Urban Hafner
    September 3, 2013 at 6:58 am

    Now that I have three of those I’m thinking of getting an IR gel and convert one into an IR camera. The gel would just go where the protective filter sits …

  • Avatar
    Reply
    Hamish
    September 3, 2013 at 7:04 am

    I’d like to see that! I suppose you might have issues with focus for closer work, but landscapes should be fine…?

  • Avatar
    Reply
    João Peixoto
    May 20, 2015 at 11:29 am

    Hello there Hamish. I just bought one konica big mini BM201 for a good price and I had the very same problem. After reading your post I tried it myself. Everything went fine and it was clean once again but… Now the lens doesn’t slide in and out so smoothly. Seems like the motor is being forced therefor making a strange slow working noise. Do you have any idea why this happened and if I can fix it? thanks…

    • Avatar
      Reply
      Hamish Gill
      May 20, 2015 at 11:44 am

      Have you either tightened the screw to tight or left it too loose?

      • Avatar
        Reply
        João Peixoto
        May 20, 2015 at 11:53 am

        Neither one or the other. I wonder if it can be the battery. I bought a new Panasonic Photo Power CR123A (Lithium 3V CR17345). The camera still marks it as full, but I don’t know if testing the motor so many times made it slower…

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          Reply
          João Peixoto
          May 20, 2015 at 11:54 am

          I tested now without the lens cap and it still is slow (not so much but still slower than before). So that must not be the problem :/

          • Avatar
            Hamish Gill
            May 20, 2015 at 2:38 pm

            If it works, I wouldn’t worry anyway … As long as it takes pictures, that’s al that really matters!

  • Avatar
    Reply
    hugo miguel
    February 20, 2018 at 5:30 pm

    Hello Hamish, i’ve got a konica A4, and the film doesn’t wind, the camera works fine without film, everything works fine except this issue. Do you got any idea how to solve this problem?

    • Avatar
      Reply
      Hamish Gill
      February 21, 2018 at 10:04 am

      You might want to try changing the battery in the data back

      • Avatar
        Reply
        hugo miguel
        February 28, 2018 at 3:16 pm

        Hi Hamish, I already found the problem, the problem is with the Film Sprocket, i will try to open and fix.
        Thanks

        • Avatar
          Reply
          Hamish Gill
          March 1, 2018 at 10:22 am

          Cool, good luck!

        • Avatar
          Reply
          Craig Schroeder
          February 20, 2019 at 4:31 am

          I had an A4 and got great results with it. Mine started to run automatically to the film end, shooting each frame non-stop. I was told that the electronics were wonky on these and winder-related issues were somewhat common. let us know how things turn out, please.

  • Avatar
    Reply
    Brett Chesterfield
    November 10, 2018 at 11:39 am

    Hey Hamish,
    Any idea where I could pick up a light seal kit for the Konica A4? Got a little rectangle light leak that is in the left of my landscape exposures and the top of my potrait exposures.

    • Avatar
      Reply
      Hamish Gill
      November 10, 2018 at 9:16 pm

      What colour is the leak?

      • Avatar
        Reply
        Brett
        November 20, 2018 at 8:57 am

        White!

      • Avatar
        Reply
        Brett
        November 20, 2018 at 10:06 am

        Its a soft white, that appears to come from the film canister side.

  • Avatar
    Reply
    Keiran
    January 29, 2019 at 10:37 pm

    Me too brett after taking the front off to clean the lens, i imagine we’ve damaged the light baffles by taking it apart.

    • Avatar
      Reply
      Brett
      April 22, 2019 at 1:15 am

      Thats a shame Keiran! I have not taken mine apart, but its not a consistent light leak. So strange.

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