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  1. #11

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    The author of the following paper advocates the use of a point light source system: http://www.durst-pro-usa.com/pdf/COL...ED%20LIGHT.pdf

    His argument is that a minimally exposed and developed film is to be preferred for maximum resolution and best tonality. (start with page 36)

  2. #12

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    Point light sources are pretty arcane, and I don't see why anyone would even need one. But if you love spotting prints... Otherwise, the best
    way to get great tonality along with great resolution is to shoot a larger sized film to begin with, and otherwise have all you darkroom gear
    precisely aligned. The link provided above probably wants to sell you something for tens of thousands of dollars with a mandatory service contract. Don't ask me how I happen to know that.

  3. #13
    cliveh's Avatar
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    Am I correct in assuming that a point source enlarger would be more suited to a smaller format size?

    “The contemplation of things as they are, without error or confusion, without substitution or imposture, is in itself a nobler thing than a whole harvest of invention”

    Francis Bacon

  4. #14
    richard ide's Avatar
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    Point source enlargers were ideal for document reproduction (maps, engineering drawings etc). I have the head of a camera enlarger for 8 x 10 negatives. You could make a print from a negative with a Dmax of .30 and the print would be black lines on a white background. The largest condenser enlarger I came in contact with could enlarge a 21" x 27" image. Distance from lamp to condenser is very critical but easy to set up. Image sharpness is not a problem. As said before, every bit of dust shows.
    Richard

    Why are there no speaker jacks on a stereo camera?

  5. #15
    ic-racer's Avatar
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    Quote Originally Posted by cliveh View Post
    Am I correct in assuming that a point source enlarger would be more suited to a smaller format size?
    Back in the day electron micrographs were frequently made on sheet film a little smaller than contemporary 4x5" film. That film size is small to some, and large to others

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