31
4
To perform fine adjustment of the back focus after the ABF operation indicator
goes off and automatic back focus is adjusted, use the right or left button.
Note:
• No operation for 10 seconds or more automatically clears the focus position indicator.
• To change the angle of view by moving the zoom adjustment ring, also move the focus lock
knob to adjust the focus.
• The originally adjusted focus may be slightly off depending on the iris state resulting from the focal
depth of the lens. In such a case, open the aperture by darkening the subject as much as pos-
sible in the same way of taking picture, and then adjust the focus. Defocus can be prevented.
• Use of "ABF" of "BACK-FOCUS" in the setup menu (
+
Operating Instructions (PDF)) allows
users to adjust the focus optimally in the range of the capability to automatically follow the
variation in illuminance.
• The out-of-focus level in the near-infrared light region may be higher than that in the visible light
region.
Setting "C/L
↔
B/W" of "BACK-FOCUS SETUP" to "AUTO" or "PRESET" in the setup menu
(
+
Operating Instructions (PDF)) allows users to adjust the focus in both the near-infrared light
and visible light regions (The variation in illuminance is not followed after focus adjustment.).
