5. SetupImage 5-14Engaging the zoom/focus locking systemHow to unlock the zoom ring and the focus ring of the lens?Both zoom ring and focus ring are unlocked at the same time.1. Release (i.e. counterclockwise) the zoom/focus locking knob until no resistance is felt anymoreImage 5-15Unlocking the zoom/focus locking system2. Now the zoom and focus can be adjusted5.7.3 Back focal length adjustmentBFLBack Focal LengthWhat can be done ?The position of the projector lens in relation to the interpolation lens can be adjusted. The lens can be shifted towards or away fromthe projector chassis . By doing so, the back focal length is adjusted and the focus is set to an optimal value. This adjustment willallow to benefit from the largest adjustment range for the lens focus (motorized lens focus).42 R59770330 SIM 7QP SERIES 08/12/2014
