Setting/Adjustment
Adjusting the Back Focus
This camera is adjusted to an optimum wide range before shipment but readjustment is required when using zoom lens or when the lens focus ring is out of focus.
Back focus adjustment ring
Lens focus ring
Tighten |
|
| Back focus fastening |
Loosen | screw (M2) |
mWith a Fixed-Focus Lens
If the focus cannot be adjusted correctly with the lens focus ring, adjust the back focus as follows.
1Loosen the back focus fastening screw by turning it anti- clockwise with a + screwdriver.
2Shoot some fine patterns on the subject or away from the subject.
3 Turn the lens focus ring to ∞.
4 Turn the back focus adjustment ring to get the best focus.
5 Tighten the back focus fastening screw by turning it clockwise.
mWith a Zoom Lens
If the image is out of focus when zooming (telephoto - wide angle), adjust the camera as follows.
1Loosen the back focus fastening screw by turning it anti- clockwise with a + screwdriver.
2Shoot some fine patterns on the subject or away from the subject.
3Zoom to the maximum telephoto position and turn the lens focus ring to adjust the focus.
4Zoom to the maximum wide angle position and turn the back focus adjustment ring to adjust the focus.
5Repeat steps 3 and 4 two or three times.
6Tighten the back focus fastening screw by turning it clockwise.
Memo v When the subject is bright and an ND filter is used, back focus adjustment can be performed more accurately. (An ND filter is a filter that reduces light incident on the lens of all wavelengths equally.)
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