Film Grain

Discussion in 'Photography' started by measekite, Dec 20, 2004.

  1. measekite

    measekite Guest

    I was told by a professional photographer that it is impossible to have
    grain in color film. That grain comes from silver halide and that
    occurs only in black and white film. He said what we refer to as grain
    has something to do with color separation of the RGB and contrast.

    I would like to hear a consensus on this. Does anyone really know.
     
    measekite, Dec 20, 2004
    #1
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  2. measekite

    RSD99 Guest

    "Technically" it's not the image of silver halide "grains" ... but visually
    it's exactly the same thing.


    Your friend ... the "professional photographer" ... needs to go to a better
    school and learn a little more about the chemistry of (film) photography.
     
    RSD99, Dec 20, 2004
    #2
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  3. It depends on what you mean by 'grain'. The silver image particles are
    bleached away, but the dyes or pigments are tied to the same locations
    in space, so the visual impression is the same as 'grain'.
    The correct term for the appearance is 'graininess'.
     
    uraniumcommittee, Dec 20, 2004
    #3
  4. measekite

    chrlz Guest

    The 'graininess' is caused by dye clouds. It looks grainy. So it
    usually is called... 'grain', logically enough. The fact that the
    graininess is not caused by grains of silver halide is not exactly of
    huge importance.

    "color separation of RGB and contrast" sounds like a description given
    by someone who, like they said, doesn't have much of a clue and is more
    intrested in semantics than photography. If you want to know more try
    googling 'dye clouds' and/or 'color film chemistry'.
     
    chrlz, Dec 20, 2004
    #4
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