CONNECTORS AND CONTROLS
BACKFOCUS ADJUSTMENT SCREW
This screw is used to position the CCD image sensor at the
precise point of focus of the lens.
Backfocusing Fixed-Focal-Length Lenses
1, Install a lens and connect the camera to a monitor and power
supply as described elsewhere in this manual.
2, Open the iris completely. If an
lens is used, reduce
the room lighting to allow the lens to open completely. This
gives the most accurate results.
3. Adjust the screw slowly until the sharpest picture is obtained.
This completes the adjustment. The backfocus adjustment
screw is held in place by friction, so there is no locking
screw.
Backfocusing Zoom Lenses
3.
4.
5.
7.
Install a lens and connect the camera to a monitor and power
supply. If the lens is motorized, it must also be connected to
a lens control,
Position the camera
feet (8-16 meters) from a flat
vertical surface suitable for focusing. A newspaper works
well as a focusing target.
Open the iris completely.
If
an
lens is used, reduce
the room I ighting to allow the lens to open completely, This
gives the most accurate results.
Zoom the lens in to the maximum telephoto setting. Adjust the
optical focus of the lens using the remote lens control.
Adjust the backfocus screw for the sharpest image.
Zoom out to the maximum wide angle setting. If the picture is
no longer in focus, readjust the backfocus screw,
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
screw.
locking
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