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  1. #11
    desertrat's Avatar
    Join Date
    Aug 2005
    Boise, ID
    Multi Format
    I've tried diluted paper developer for ortho litho film. Contrast is still excessive, although not the pure halftone that results from the A and B litho developers. Developing times are so short, even with highly diluted paper developers, that uneven development is a problem.

    Back in the '70s and '80s there was some interest in getting the maximum resolution from 35mm negatives by using document copying films and special developers to get pictorial contrast. I believe these developers would give better results with ortho litho film than diluted paper developer. I have had fairly good results from D-23 diluted about 1:14 for about 5 minutes, give or take a little. Exposure is about EI 0.5, or 2 seconds at f16 under sunny 16 conditions. I've tried the recommended exposures of EI 2 to 6, and get no shadow detail and excessive contrast.

    The tonality of these negatives is different than pan film, and may work for some scenes but not for others. I use ortho litho film now only to see what the lens will do of an old camera I bought. Film resolution is very high, it's nearly grainless, and it's easy to cut a piece of film under a safelight that will fit over the film gate.
    Last edited by desertrat; 10-24-2013 at 12:00 PM. Click to view previous post history.
    Happiness is a load of bulk chemicals, a handful of recipes, a brick of film and a box of paper. - desertrat

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