From 640435e29dc73555de614de6431b5cbe2e43e14e Mon Sep 17 00:00:00 2001 From: mattmcw Date: Tue, 26 Jul 2022 15:01:47 -0400 Subject: [PATCH] Add X-Y adjustment section --- NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.md | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.md b/NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.md index 7ef24e1..2cabf9c 100644 --- a/NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.md +++ b/NOTES_ON_OPTICAL_PRINTER_TECHNIQUE.md @@ -225,4 +225,10 @@ On simple optical printers the only lateral adjustment is of the lens (rather th This is geometrically adequate. But the J-K adjustments are even too flimsy for a lens. -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. \ No newline at end of file +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. + +## EXACT 1:1 + +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. +Then the printed image is the same size and in the same position as the original image. +If the printer lacks a tilt adjustment the camera may be shimmed.