ACTi ACM-3701E - Manual (Page 16)

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1.6.1.2 Tighten the camera body to ceiling with 4 screws
1.6.1.3 Adjust the lens position and focus
1. Adjust position
Using the supplied allen/hex key, lossen the locking screws,
move the lens to the desired position, and gently retighten the
locking screws.
2. Adjust focus
Using the supplied allen/hex key, lossen the focus lock screw,
Manually rorate the lens to adjust the focus until the image is
satisfactory.