Production Tools
Contact printing machines are more elaborate devices than the more familiar and widely available contact printing frames. They typically combine in a box the light source, intermediate glass stages, and a final glass stage for the negative and paper to be placed upon, as well as an elastic pressure plate to keep the negative and the paper in tight contact. Dodging can be accomplished by placing fine tissue paper on the intermediate glass stages between the light source and the negative/paper sandwich to modify the exposure locally. The benefit to such time intensive techniques is the ability to then make multiple prints with negligible variation, at full production speed.
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