When an operator is working at high magnification the dept-of-field is very small. Having the ability to turn off the auto focus and position the optics directly on a feature of interest may become a necessity. In some cases we can see defects better with our eyes than a camera.

By pressing a button on the keypad, the camera switches from auto focus to manual focus.

With the Gas Cylinder Lift Arm it is easy to manually position the lens to view specific 3D images.
