Add X-Y adjustment section
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@ -226,3 +226,9 @@ This is geometrically adequate.
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But the J-K adjustments are even too flimsy for a lens.
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But the J-K adjustments are even too flimsy for a lens.
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It helps, after they are set, to gently tap the lens, so it finds a stable position, and then to readjust if necessary, etc., etc.
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It helps, after they are set, to gently tap the lens, so it finds a stable position, and then to readjust if necessary, etc., etc.
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## EXACT 1:1
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The lateral movements of the lens, the to-fro movements of the lens and camera, and a tilting of the camera (if necessary) allow the optical printer to be set for exact 1:1 reproduction.
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Then the printed image is the same size and in the same position as the original image.
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If the printer lacks a tilt adjustment the camera may be shimmed.
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