Improve the Rangefinder contrast and visibilty

Discussion in 'Rangefinder Forum' started by Alpenhause, Oct 4, 2012.

  1. Alpenhause

    Alpenhause Member

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    Improve the Rangefinder contrast and visibilty
    This is one experiment for those that service and work on rangefinders,

    Here is a list of beam splitters with different transmitting and reflecting ratios, which one do you think is best? my intent is to improve the rangefinder contrast and visibilty in a old Polaroid 110B camera.

    I have no idea which reflectivity and transmission ratio would work best, one or two out four on this list may be suitable,


    25mm X 38mm, 30R/70T, Plate Beamsplitter
    NT46-667 $39.50
    25mm x 38mm, 40R/60T, Plate Beamsplitter
    NT46-704 $39.50
    25mm X 38mm, 50R/50T, Plate Beamsplitter
    NT32-363 $39.50
    25mm X 38mm, 70R/30T, Plate Beamsplitter
    NT46-669 $39.50
     

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  2. Richard S. (rich815)

    Richard S. (rich815) Subscriber

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  3. Alpenhause

    Alpenhause Member

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    That is cool! I have used that trick once before, I will look into it, I still would like for those in the know to point me into the right replacement direction as I want to get an OEM type effect that is better than stock.
     
  4. brucemuir

    brucemuir Member

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    What is the material used for the Leica screwmount series that is a red/rubylith type material that screws onto the front round rangefinder window.

    Anyone know?

    I saw this method mentioned over on graflex.org years back also.
     
  5. 250swb

    250swb Member

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    I think this is what you might want, a Lee filters sample book

    www.ebay.co.uk/itm/Old-LEE-filters-numeric-edition-swatch-book-fabulous-rare-collectable-/330804589218?pt=LH_DefaultDomain_3&hash=item4d057d72a2

    You will find lots of translucent filter samples of all types that are suitable for cutting up to 'invent' things with.

    Steve