6 - ENGLISH
Adjusting the Focal Balance (Only for ET-ELW30C, ET-ELW31C)
The focal balance between the center and periphery of the projected image changes
depending on the size of the projected image.
The lens is equipped with a focus balance adjustment function for the screen periphery.
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Procedure for adjusting the focal balance
Periphery focus
adjustment ring
Projected image size
Index line
1) Turn the periphery focus adjustment ring
(the laurette ring in the middle of the lens)
to adjust the index line to the projected
image size (between 40
"
and 400
"
).
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For example, when the projected image size is
250", adjust the index line to between 100" and
400".
2) Adjust the projected image size to match
the screen by operating the projector.
3) Adjust the focus by operating the projec-
tor.
Making Adjustments
Please check the projection lens specifications and use the appropriate projection lens
depending on the usage condition.
Model No.
ET-ELW31C
ET-ELW30C
ET-ELT30C
ET-ELT31C
Lens Type
Short focus
zoom lens
Short focus
zoom lens
Long focus
zoom lens
Ultra long focus
zoom lens
F value
F 1.7 to 2.0
F 1.7 to 1.99
F 1.7 to 2.24
F 1.7 to 2.3
Focal Length (f)
10.46 to 13.61 mm 13.09 to 17.03 mm 31.34 to 56.79 mm 56.41 to 101.66 mm
Dimensions
Width
127.4 mm (5")
127.4 mm (5") 110 mm (4-11/32")
(excluding protrusion)
110 mm (4-11/32”)
(excluding protrusion)
Height
127.4 mm (5")
(excluding protrusion)
127.4 mm (5")
(excluding protrusion)
110 mm (4-11/32") 110 mm (4-11/32”)
Depth
194.5 mm (7-21/32") 194 mm (7-5/8")
205.1 mm
(8-1/16")
214.5 mm (8-7/16")
Net Weight
Approx. 1.2 k
]
(2.6 lbs)
Approx. 1.2 k
]
(2.6 lbs)
Approx. 1.52 k
]
(3.4 lbs)
Approx. 1.55 k
]
(3.4 lb)
Note
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For about the projection distance, see “Setting up” in the operating instructions for the projector
you are using.
Specifications
