12Lens MountingMount the lens by rotating it clockwise slowly. Then, connect the lens cable to the ALC lens connector of the camera.Optional lensLens type Model numberALC lens for 1/3 inch CCD cameras 2x varifocal (high resolution) WV-LZA62/2Other lenses for 1/3 inch CCD cameras can be mounted on this camera. However, high resolution scanning of this cameramay not be fully used for full-scanning (1280 x 960) or partial scanning (960 x 720).It is recommended to use a dedicated high-resolution lens when shooting a dark subject with the aperture opened.Focus adjustmentFocus adjustmentWhen shooting an object using an AF lens, the first adjusted focus may be out-of-focus depending on the focal depth of thelens in use. In this case, focus on a darker object with the aperture open to prevent out-of-focus.When "ABF" is selected for "BACK-FOCUS" on the SETUP menu (→ page 18), the camera can automatically focus on a subjectwith the best available conditions even when the illumination changes.• Under near-infrared light, the focus may be slightly out-of-focus than under visible light.When the "BACK-FOCUS SETUP" page is displayed and "AUTO" or "PRESET" is selected for "C/L ←→ B/W" using theoperation buttons on the camera, the camera can focus on subjects both under near-infrared light and under visible light.(However, the camera will not change the focus according to the illumination change when the focus had been adjustedonce.)PUSH TO LOCK/EJECTCS-mount lens (optional)ALC lens connectorAttach the ferrite core as close aspossible to the ALC lens connectorside of the lens cable.CS-mount: Less than 8 mmWithin φ 20 mm