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bw

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Posts posted by bw

  1. I have a Nikkor 135mm f/2 Ais that needs a helicoid regrease. I have received a

    quote for it here in Denmark and it is ridiculously expensive. (approx. 335

    euros). I was contemplating posting it somewhere else in Europe for a service,

    perhaps Germany or the UK. Does anyone have any suggestions of a reputable

    reasonably priced camera repairer that may be able to help?

  2. I have attached a picture of a nikon lens with some damage to the rear element.

    Can someone tell me is this separation? Is this repairable? Will it require a

    complete new element? From images taken with the lens it looks like the result

    is reduced contrast and increased flare. Is it even worth bothering with?<div>00IgCC-33337784.thumb.jpg.d0f77584b00c7210bb94650ed8f2c64a.jpg</div>

  3. Sorry if I didnt explain myself clearly enough. The Graflock back has been mounted on/in the back door of the camera. I have cut an appropriately sized hole in the back door with the graflock back centred over the lens. The graflock back is actually resting on the left side against the remainder of the camera's back door. The result is that the graflock back will be about 36mm further back from the original film plane. Does it really make any difference whether it is 25mm or 36mm or greater?

     

    And thank you for the links and description for collimating the lens.

  4. I am in the process of converting a 110B to 4 x5. I have attached a graflock

    back to the rear door of the camera. The graflock back is positioned up against

    the rear door of the camera (on the left side atleast)ie. it cannot be moved

    any closer to the lens. In this position it is approximately 36mm further back

    from the original film plane.

     

    As I understand it, I should then reposition and fix the front standard 36mm

    further back for the modified camera to focus properly.

     

    I have read in previous posts on this subject that the film plane should be

    moved back by approximately one inch (25mm).

     

    My question. Is 36mm too far?

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