Konica Pearl III, rangefinder adjustment?

Discussion in 'Medium Format & Large Format' started by ricklb55, Jun 7, 2017.

  1. ricklb55

    ricklb55 TPF Noob!

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    Just acquired the Pearl III. U.S. $190 I have not yet put film through it but so far I am not terribly impressed:
    1. The shutter/lense is not quiet parallel to the plane of the film. Is this a significant issue?
    2. The shutter/lense is a tad loose. Not really a problem but it just makes the camera feel cheap.
    3. The rangefinder is not reporting the correct distance. Anybody know how this is adjusted? I removed the plate the contains the film type dial but it only exposes a screw for the vertical alignment of the rangefinder mirror.

    The good: very little wear, very clean lense, all shutter speeds are accurate to the ear, no leaks in the bellows, it has a PC synch and it fires a flash.

    Did I pay too much? Feels like it.


     
  2. dxqcanada

    dxqcanada Been spending a lot of time on here!

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    1. Ah, hmm that would cause focus issue if it is extreme.
    2. The front shutter/lens is secured by a threaded ring ... you should be able to tighten it from in the back.
    3. Sorry, can't help you there ... never had one of these.

    Searching on eBay ... they ask a lot for this camera. I do not know it, so I can't say if it is worth it.
     
  3. ricklb55

    ricklb55 TPF Noob!

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    Checking around the internet I can find nothing specific to adjusting the rangefinder on Konica Pearl's. So I plunged ahead and removed the top plate and found two screws just behind (closer to the film side) the 45° mirror that is just behind the rangefinder opening (not the viewfinder opening). The screw just behind the mirror adjusted the vertical. The screw behind that adjusted the horizontal. Got it all adjusted at about 8 feet and felt very proud of myself, but then discovered the rangefinder did not converge at infinite. Getting that correct made the close focus off. From what I have read on various forums it seems there are at least two adjustment screws: one for close and one for infinite. But what have I adjusted? Close or infinite? And where is the opposite adjustment screw?

    FWIW, after I complained to the seller he refunded me 50% of the purchase price. Also, with leaving the camera open and allowing the bellows to relax the lense is coming much closer to parallel.
     
  4. dxqcanada

    dxqcanada Been spending a lot of time on here!

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    got a picture of the top?
     
  5. ricklb55

    ricklb55 TPF Noob!

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    Picturess From Front_0257.jpg From Rear_0255.jpg top_0256.jpg
     
  6. dxqcanada

    dxqcanada Been spending a lot of time on here!

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    Hmm, I suspect that pivoting part in the middle plays a role in infinity focus.
     
  7. compur

    compur No longer a newbie, moving up!

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    How are you determining if focus is correct or not at a particular distance?
     
  8. ricklb55

    ricklb55 TPF Noob!

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    By eyeball. I put the camera on a tripod and tape measure a distance to an object, the distance being one of the whole numbers indicated on the camera's distance scale. Then, while viewing through the camera view finder, I turn the horizontal adjustment screw until the image alignment is very close - impossible to get exact. Exact alignment is done by adjusting another screw outside of the top plate. This second horizontal adjustment screw is located in the camera linkage, in a two o'clock position relative to the lense, and it moves the entire horizontal adjustment linkage by a very small amount and allows exact alignment.
     
  9. ricklb55

    ricklb55 TPF Noob!

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    OK. I thought it might be one of the two screws that have a black sealant applied to them. They are located to the right of the pivoting assembly.
     
  10. compur

    compur No longer a newbie, moving up!

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    I recommend using this method:
     

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