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  1. #31
    jstraw's Avatar
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    Aug 2006
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    Flashing all paper from the same, fixed distance makes good sense to me. It's got me thinking about a means to put an RH flasher on a swing-away arm next to my enlarger.
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  2. #32
    Lee L's Avatar
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    I can think of two alternate ways of getting consistent flashing when you need to raise and lower the enlarger.

    1) With the flashing source mounted by the enlarging lens it will change distance as you change enlargement factors, but you can use an enlarging meter like the Ilford EM-10, Beseler Analyte 500, or a regular meter that reads low light like a Gossen LunaPro to set the light level or time from the flasher to be consistent with the needs of the paper.

    2) Mount the flasher at a fixed height over a second easel for a consistent flasher to paper distance. Obviously you need to do the flashing either before or after all other exposures with this method.

    When I was making 2000 custom B&W prints a month in a lab 20 years ago, I used an Ansel Adams style pre-exposure tool* under the enlarger lens with the negative still in place. I found that about 20% of the main exposure would do the job on the overdeveloped negs I was often given to print. I didn't have an enlarging meter in that lab. You could run the aperture up and down with this method to adjust flashing intensity. Place a black card over the paper if you need to meter at the baseboad without exposing it, or make the reading before you get paper out. A styrofoam cup over the enlarger lens could also work in the same fashion.

    Lee

    * See Ansel Adams "The Negative" for this. It's basically two pieces of translucent plastic spaced with thin cardboard around three sides, taped together, and sized to accept either 75 or 100mm Wratten gels in the space between the plastic through the gap in the fourth side.

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