1616Setting the ALC lens selection switchYou can set the lens selection switch located on the side of the cameraaccording to the lens type. When the mounted lens is an auto Iris lensof DC control type, set the switch to “DC.” When the mounted lens isan auto Iris lens of Video control type, set the switch to “VIDEO.”NAdjusting the back focusThe back focus of the camera is adjusted at the factory before delivery butsome lenses can be out of focus depending on the lens type. In this case,you have to adjust the back focus. The following describes how to adjustthe back focus of the lenses.In case of the lens with no zooming function① After exposing the camera to an object with high resolution (likea dart-patterned image) at a distance of more than 10m, set thelens focus ring to infinite (∞).➁ Adjust the Back Focus Control Bar until the object is of best quality.➂ Fix the screw of the Back Focus Control Bar.In case of the lens with zooming function① After exposing the camera to an object with high resolution (likea dart-patterned image) at a distance of 3 to 5m, fully rotate thelens zoom to the TELE direction. Then adjust the lens focus ringuntil the object is of best quality.➁ Fully rotate the lens zoom to the WIDE direction and adjust theBack Focus Control Bar until the object is of best quality.➂ Repeat step 1 and 2 two or three times until the focuses of ZoomTELE and Zoom WIDE are clear enough.