Installing the Projector (Cont.)
Lens Shift Function
■ Change of projection screen according
Installing the Projector (Cont.)
Lens Shift Function (Cont.)
to aspect ratio
Screen with 4 : 3 aspect ratio
Maximum amount of shift
The maximum amount of vertical shift is restricted by the amount of horizontal shift made.
Py(%)
Screen after shifted
Screen
Screen with 16 : 9 aspect ratio
90° | 90° | 90° |
Center line of the lens
The amount of shift is defined as follows:
With the screen width taken as 1, horizontal shift is defined as a ratio (%) of the screen width, while with the screen height taken as 1, vertical shift is defined as a ratio (%) of the screen height.
Vertical screen size
(y): 100%
Screen with zero (0) shift
Horizontal screen sized
(x): 100%
Px
(%)
No.51666
Install the projector so the center of the projection screen is the same height as the center of the lens.
The separately sold lenses used on the projector have a lens shift function. With the lens used, you can adjust the projected image vertically using the setting menu or the remote control’s SHIFT button U or D.
When using the projectors in a stack configuration (stacked one over another), make adjustment so that the picture of one projector overlays exactly that of another using the lens shift function.
For detailed adjustment procedures, refer to “Operating the Setting Menu” (page 30) and “Controls and Features” (page 11). For maximum amount of shift, refer to “Maximum Amount of Shift” (page 17).
(When the lens needs to be adjusted in horizontal angles, consult your dealer or service center.)
Note
• Some of the lenses (except
Memo
Stack configuration:
Up to four projectors can be stacked and used together (stack configuration).
Using two or more projectors together, high image brightness can be attained. This allows you to project sufficiently bright image in a fairly large
auditorium or relatively bright place without using a
CAUTION
To prevent damage to the projector during shipment, a shift center lock pin was used to fix the lens mechanism when the projector was shipped out the factory. If you implement “SHIFT LENS” on the setting menu and the lens does not either move up or down, the shift center lock pin may not have been removed. Consult your dealer or service center.
CAUTIONS and NOTES
•When installing the screen, use a 4 : 3 aspect ratio picture.
(A 16 : 9 aspect ratio picture is projected based on the width of the range in which a 4 : 3 aspect ratio picture is projected.)
•The diagonal length of a 16 : 9 aspect ratio picture is about 91.8% that of a 4 : 3 aspect ratio picture. This value is a guide and should be used as a reference.
•When projecting at the maximum projection distance, we recommend that the projector be used with the zoom on the Tele (T).
•If sunlight or lamp light strikes the projection screen directly, the picture becomes whitish and dim. Be sure to use a curtain, etc. to shield the light.
•Trapezoidal distortion may not be corrected.
Adjust the projector within the range of angle adjustment (up/down adjustment angle: +4°; horizontal adjustment angle: ±5°) so that it is set up level.
Relational table for maximum shift amounts (aspect ratio 4 : 3)
Py(%) | Px(%) | Py(%) | Px(%) | Py(%) | Px(%) | Py(%) | Px(%) | Py(%) | Px(%) |
0.000 | 31.968 | 10.000 | 28.102 | 20.000 | 23.272 | 30.000 | 17.268 | 40.000 | 9.739 |
1.000 | 31.621 | 11.000 | 27.666 | 21.000 | 22.729 | 31.000 | 16.592 | 41.000 | 8.881 |
2.000 | 31.265 | 12.000 | 27.219 | 22.000 | 22.173 | 32.000 | 15.900 | 42.000 | 8.000 |
3.000 | 30.901 | 13.000 | 26.762 | 23.000 | 21.606 | 33.000 | 15.192 | 43.000 | 7.096 |
4.000 | 30.528 | 14.000 | 26.295 | 24.000 | 21.026 | 34.000 | 14.467 | 44.000 | 6.167 |
5.000 | 30.146 | 15.000 | 25.818 | 25.000 | 20.434 | 35.000 | 13.725 | 45.000 | 5.213 |
6.000 | 29.756 | 16.000 | 25.331 | 26.000 | 19.828 | 36.000 | 12.966 | 46.000 | 4.231 |
7.000 | 29.356 | 17.000 | 24.833 | 27.000 | 19.209 | 37.000 | 12.189 | 47.000 | 3.221 |
8.000 | 28.948 | 18.000 | 24.324 | 28.000 | 18.577 | 38.000 | 11.392 | 48.000 | 2.180 |
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9.000 | 28.530 | 19.000 | 23.803 | 29.000 | 17.930 | 39.000 | 10.576 | 49.000 | 1.107 |
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| 50.000 | 0.000 |
Relational table for maximum shift amounts (aspect ratio 16 : 9)
Py(%) | Px(%) | Py(%) | Px(%) | Py(%) | Px(%) | Py(%) | Px(%) |
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0.000 | 31.968 | 10.000 | 26.609 | 20.000 | 19.421 | 30.000 | 9.747 |
1.000 | 31.503 | 11.000 | 25.980 | 21.000 | 18.581 | 31.000 | 8.599 |
2.000 | 31.234 | 12.000 | 25.333 | 22.000 | 17.716 | 32.000 | 7.410 |
3.000 | 31.528 | 13.000 | 24.666 | 23.000 | 16.824 | 33.000 | 6.178 |
4.000 | 30.018 | 14.000 | 23.980 | 24.000 | 15.905 | 34.000 | 4.900 |
5.000 | 29.491 | 15.000 | 23.274 | 25.000 | 14.958 | 35.000 | 3.573 |
6.000 | 28.949 | 16.000 | 22.548 | 26.000 | 13.981 | 36.000 | 2.193 |
7.000 | 28.389 | 17.000 | 21.800 | 27.000 | 12.973 | 37.000 | 0.756 |
8.000 | 27.813 | 18.000 | 21.030 | 28.000 | 11.933 | 37.509 | 0.001 |
9.000 | 27.220 | 19.000 | 20.237 | 29.000 | 10.858 |
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16 | 17 |