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Adjustment
Flange back adjustment (For zoom lens)
This is for adjusting the zoom lens focus over the entire focusing range from the TELE end to the WIDE end.
1. Fully open the iris by shooting a dark object.
2. Aim the camera at any object over 6.56 ft. (2 m) away from the camera,
and then loosen the flange back lock knob.
3. Set the lens to its TELE end first and adjust its focus with the focus ring.
4. Set the lens to its widest angle next and adjust its focus with the flange
back adjust ring.
5. Adjust the focus ring and the flange back adjust ring alternately for the
best focus within the zooming range. Tighten the flange back lock knob
upon completion of focusing.
Iris gain control in a lens
An iris gain control hole (G, S) is usually provided in the front of the lens.
Adjustment of the iris gain, with a screwdriver through the hole may be
done as follows.
(Shape and location of the hole may vary depending on the type of lens.)
1. Turn the iris selection switch to position A (AUTO).
2. Rotate the iris gain control to the maximum gain, but in a range where
no hunting or oscillating of the iris ring develops.
Focus ring Flange back adjust ring
Flange back lock knob
Iris gain control
Automatic iris power zoom lens