Switch to an objective with as high a magnification as possible.
Bring a specimen into focus while looking through the eyepiece.
Switch to the objective with the lowest magnification.
Loosen the screw (LOCK) using a Allen screwdriver.
While viewing the specimen on the monitor, bring it into focus by turning the screw (FOCUS) with the Allen screwdriver.
When the specimen has been brought into focus, tighten the screw (LOCK).
(If you use a TV adapter other than the U-TV0.5XC, refer to the instruction manual for the TV adapter that you use.)
What is confocal adjustment?:
The eyepiece and camera are adjusted so that the image in focus viewed through the eyepiece is confocal with the image in focus viewed through the camera.