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Pelco Manual C1917M (12/97) 13
Zoom Lens Models
1. With the camera operating, view an object at least 75 feet away.
2. Make sure the lens iris is wide open.* If outdoors use a neutral density filter in
front of the lens to insure that the iris is fully open.
3. Set the lens focus to infinity.
4. Adjust the lens zoom to extreme WIDE angle.
5. Adjust the back focus to bring the object being viewed into the sharpest focus
(the filter must be in place if the adjustment is being made outdoors).
6. Move the lens to extreme TELEPHOTO.
7. Adjust the lens focus (by the controller) for best picture.
* The lens aperture must be wide open for all back focus adjustment procedures.
This can be done in subdued lighting or with filters.