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3. Adjusting the lens
The use of a sheet of paper held in front of the screen can be useful to determine the focus plane (position
for best focus)
Unsharp corners in the image can be adjusted with the Sheimpflug adjustment (3 adjustment screws on the
lens holder), see the Installation section
Before adjusting the lens focus, insure that the Back Focal Length is correctly adjusted, "Back focal length
adjustment", page 9
12
R59770110 QSD LENSES 25/02/2008
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