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Back Focus Adjustment
The CS mount is adjusted to the widest point of the
applicable range by default. When using the zoom
lens or C mount lens, or the lens is out of focus,
readjustment is required using the focus ring.
● When required, follow the method below to
adjust the back focus.
● In order to adjust the back focus accurately,
do so according to the steps below upon
opening the lens iris using the iris adjustment
and ND filter.
(ND filter is a filter that is used to evenly
reduce the light entering the lens at all
wavelengths.)
● Connect a monitor TV to the [VIDEO OUT] at
the rear of the unit, followed by adjusting as
follows.
Back Focus adjustment ring
Loosen
Lens focus ring
Tighten
Back Focus locking
screw (M2.6)
Fixed focus lens
Adjust when the lens cannot be brought into
focus using the focus ring.
1.
Loosen the Back Focus locking screw in the
anti-clockwise direction using a Phillips
screwdriver
2.
Shoot the object or a fine pattern that is
farther away than the object
3.
Set the focus ring of the lens to 1∞
4.
Turn the Back Focus adjustment ring to
optimize the focus
5.
Turn the Back Focus locking screw in the
clockwise direction and ensure that it is
securely fastened.
Zoom lens
Perform the zooming operation (Tele - Wide) and
adjust accordingly if it is out of focus.
1.
Loosen the Back Focus locking screw in the
anti-clockwise direction using a screwdriver
2.
Shoot the object or a fine pattern that is
farther away than the object
3.
Set the zoom lens to Tele and turn the lens
focus ring to adjust the focus
4.
Set the zoom lens to Wide and turn the Back
Focus adjustment ring to adjust the focus
5.
Repeat Steps 3. and 4. for 2 to 3 times
6.
Turn the Back Focus locking screw in the
clockwise direction and ensure that it is
securely fastened.
19
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