Lens Shift Ranges - Panasonic ET-ELW21C Operating Instructions Manual

Projection relationships (continued)
Attention
z To prevent blocking of the intake and exhaust vents, maintain clearances from walls and
objects of at least 1 000 mm (3'3") for the exhaust vent and at least 500 mm (1'8") for the
intake vent.
z Avoid setting up in places which are subject to sudden temperature changes, such as near
an air conditioner or lighting equipment (studio lamps, etc.).
■ Dimensional relationship
For details on the projection distance (L), refer to "Projected image size and Projection
distance" and "Projection distance formulas" in the Appendix.
Note
z For details on "Projected image size and Projection distance" for projector models other
than PT-SMZ77C / PT-SMW73C / PT-SMZ67C / PT-SMW63C / PT-SMZ57C /
PT-SMW53C / PT-SLZ77C / PT-SLW83C / PT-SLX80C / PT-SLX75C, refer to "Setting up"
in the operating instructions of the projector.

Lens shift ranges

Perform the lens position shift within the adjustment range.
Perform lens shift adjustment within the ranges shown in the following illustrations.
Moving the lens outside of the adjustment ranges may alter the focus. The focus may
change when the lens position is shifted out of the adjustment range. This is because
the movement of the lens is restricted to protect the optical parts. Projection position
can be adjusted with the optical axis shift based on the home position in the respective
range.
Lens model
PT-SMZ77C / PT-SMW73C /
PT-SMZ67C / PT-SMW63C /
PT-SMZ57C / PT-SMW53C
8-ENGLISH
ET-ELW20C / ET-ELT22C / ET-ELT23C
Image width H
0.35 H
0.30 H 0.30 H
Standard projection position
0.35 H