22e To perform fine adjustment of the back focus after automatic back focus adjustment, usethe right or left button. (No operation for 10 seconds or more closes the setup menu.)Note:• When an auto iris lens is used to record a subject, the originally adjusted focus may be slightlyoff depending on the iris state resulting from the focal depth of the lens. In such a case, openthe aperture by darkening the subject as much as possible in the same way of taking picture,and then adjust the focus. Defocus can be prevented.• For adjustment according to "How to adjust the back focus", the focus can automatically beadjusted under the optimal follow-up conditions even though the illuminance changes (Note:The adjusted focal point is not necessarily the same as the optimal focal point at a certain illu-minance.).• The out-of-focus level in the near-infrared light region may be higher than that in the visible lightregion.Setting "C/L ← → B/W" of "BACK-FOCUS SETUP" to "AUTO" or "PRESET" in the setup menu(☞ the setup instructions (PDF) allows users to adjust the focus in both the near-infrared lightand visible light regions (The variation in illuminance is not followed after focus adjustment.).• When a non-Panasonic lens that has an extended range for lens focusing is used, adjust theback focus after setting the focus to a position at a short distance from the FAR end. If adjust-ment is performed in the extended range, appropriate adjustment.