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KCMU000004
06/08/01
CAMERA – FRONT
4. Back-focus Lock Screw
–
A screw that allows
the user to secure the back-focus setting.
5. Back-focus
Adjust
Ring
– A ring that allows the
user to adjust the back-focal length or picture
focus of the lens by rotating it clockwise for CS-
mount lenses or counterclockwise for C-mount
lenses.