3. Open the iris completely. If an autoiris lens used, reduce the room lighting to allow the lens
to open completely. This gives the most accurate results.
4. Zoom the lens in to the maximum telephoto setting. Adjust the optical focus of the lens
using the remote lens control.
5. Adjust the backfocus screw for the sharpest image.
6. Zoom out to the maximum wide angle setting. If the picture is no longer in focus, readjust
the backfocus screw.
7. Repeat steps 4~6 until the image remains sharp through the entire zoom range.
This completes the adjustment. The backfocus adjustment screw is held in place by friction,
so there is no locking screw.
XX135-10-01 Rev 409 VC566DN Cameras
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