B&W Filter

Discussion in 'Darkroom Developing and Printing' started by Tom, Sep 9, 2003.

  1. Tom

    Tom Guest

    I have a Bogen 22A Enlarger and the filter drawer holds filters that measure
    2 7/8" (7.5cm) Square. The contrasting filters I bought (KODAK) are smaller
    than this.

    Question: Is it OK to hold the filter below the negative (between the
    negative and the paper) or does it have to be between the negative and the
    light source?

    Thanks

    Tom
     
    Tom, Sep 9, 2003
    #1
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  2. Tom

    Norman Worth Guest

    Gelatin filters can be held below the lens. The smaller variable contrast
    filters, such as those in plastic holders, are frequently of this type. The
    acetate and resin filters made for variable contrast work are not
    recommended for below the lens work. The simple answer is to try it and see
    if it degrades the image.
     
    Norman Worth, Sep 9, 2003
    #2
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  3. Tom

    J Stafford Guest

    Feel free to hang it under the lens (between lens and paper.) Make sure it
    is reasonably clean and you should have no problems with good filters. But
    it is so very convenient to use the drawer that you might consider looking
    for proper filters.
     
    J Stafford, Sep 9, 2003
    #3
  4. Tom

    Mike King Guest

    Most of the 3x3 sets will fit some may require a little trimming. The
    filter drawer really is more convenient.
     
    Mike King, Sep 9, 2003
    #4
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