Epson Powerlite 8000i Multimedia Projector Users Guide

							61
2Using the Projector
T
his chapter provides the following information about using your
projector:
p
Positioning the projector relative to the screen
p
Focusing and positioning the screen image
p
Resizing the projected image
p
Sleep mode
p
Controlling the projector with the remote control and the control 
panel
p
Monitoring the projector’s operating status
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            62
The illustration below identifies the parts of your projector.
Positioning the Projector
Your projector supports front, rear, and ceiling projection, allowing 
you to choose the best method for displaying your images. If you use 
rear or ceiling projection, you need to select this in the projector’s 
Advanced menu. See page 97 for more information. 
adjustable feet
foot adjust levercontrol panel
status lightsinfrared receiver infrared receiver
foot adjust 
lever
speaker
speaker
handle
zoom ringfocus ring
projection lens
optical keystone 
adjustment knob
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63
To get the best results when projecting your images, it’s important to 
position the projector at the proper height and distance relative to the 
screen.
When projecting from a table or desk, place the projector so the lens is 
aligned as closely as possible with the bottom of your screen:
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When projecting from the ceiling, align the lens as closely as possible 
with the top of your screen:
Using the Keystone Feature
In circumstances where the lens cannot be properly aligned, use the 
projector’s Keystone function to help maintain optimum screen 
geometry. p
Press the Optical Keystone Adjustment knob on the side of the 
projector (next to the handle). When the knob pops out, turn it  
clo ckw ise  o r co unt er clock wis e t o  mo ve  the  le n s up o r  d ow n. W hen  
you’re finished, press the knob back in.
p
Adjust keystone correction digitally by pressing the Keystone 
button on the control panel to increase or decrease the image 
adjustment. This feature allows you to correct up to a 
± 20
° tilt, 
maintaining an aspect ratio of 4:3. Using the ELP Link IV 
software, you can correct up to a 
± 30
° tilt.
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65
Calculating Image Size and Projection Distance
The distance between the projector and the screen determines the 
actual image size. To determine the exact distance required for a 
particular image size (or to determine the size of an image at a 
particular distance), use the formulas given below. (Remember that 
the size of the image can be changed by rotating the zoom ring; see 
page 69 for more information.)
Standard Lens Calculations
To determine the maximum and minimum diagonal size of an image 
when you know the projection distance:p
Inches:
Maximum diagonal size = (0.676 ´ projection distance) + 2.293
Minimum diagonal size = (0.483 ´ projection distance) + 1.639
p
Centimeters :
Maximum diagonal size = (1.71 ´ projection distance) + 5.824
Minimum diagonal size = (1.22 ´ projection distance) + 4.163
To determine the projection distance when you know the diagonal size 
of the screen image:
p
Inches:
Maximum projection distance = (2.070 ´ diagonal size) - 3.393
Minimum projection distance = (1.480 ´ diagonal size) - 3.393
p
Centimeters:
Maximum projection distance = (5.257 ´ diagonal size) - 8.6182
Minimum projection distance = (3.759 ´ diagonal size) - 8.6182
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For example, here are the measurements for three installations:* For an image size of 300 inches, the projector may be up to 52.1 feet away from 
the screen, depending on the setting of the zoom ring.
Long Throw Zoom Lens Calculations (ELPLL02)
To determine the maximum and minimum diagonal size of an image 
when you know the projection distance:p
Inches:
Maximum diagonal size = (0.487 ´ projection distance) + 2.336
Minimum diagonal size = (0.286 ´ projection distance) + 1.458
p
Centimeters:
Maximum diagonal size = (1.2369 ´ projection distance) + 5.9334
Minimum diagonal size = (0.7264 ´ projection distance) + 3.7033
Image size (diagonal)Horizontal distance from projector to screen
Minimum Maximum
300 inches* (762 cm) 460.6 inches (11.7 m) 586.6 inches (14.9 m)
200 inches (508 cm) 307.1 inches (7.8 m) 389.8 inches (9.9 m)
100 inches (254 cm) 153.5 inches (3.9 m) 192.9 inches (4.9 m)
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To determine the projection distance when you know the diagonal size 
of the screen image:p
Inches:
Maximum projection distance = (3.492 ´ diagonal size) - 5.091
Minimum projection distance = (2.053 ´ diagonal size) - 4.795
p
Centimeters:
M
aximum projection distance = (8.8696 
´ diagonal size) - 12.9311
M
inimum projection distance = (5.214 
´ diagonal size) - 12.1793
Short Throw Zoom Lens Calculations (ELPLW01)
To determine the maximum and minimum diagonal size of an image 
when you know the projection distance:p
Inches:
Maximum diagonal size = (0.876 ´ projection distance) + 3.793
Minimum diagonal size = (0.730 ´ projection distance) + 3.029
p
Centimeters:
Maximum diagonal size = (2.2250 ´ projection distance) + 9.6342
Minimum diagonal size = (1.8542 ´ projection distance) + 7.6936
To determine the projection distance when you know the diagonal size 
of the screen image:
p
Inches:
Maximum projection distance = (1.369 ´ diagonal size) - 4.147
Minimum projection distance = (1.142 ´ diagonal size) - 4.331
p
Centimeters:
M
aximum projection distance = (3.4772 
´ diagonal size) - 10.5333
M
inimum projection distance = (2.9006 
´ diagonal size) - 11.0007 
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Fixed Short Throw Lens Calculations (ELPLR01)
To determine the diagonal size of an image when you know the 
projection distance:p
Inches:
Diagonal size = (1.239 ´ projection distance) + 3.415
p
Centimeters:
Diagonal size = (3.1470 ´ projection distance) + 8.6741
To determine the projection distance when you know the diagonal size 
of the screen image:
p
Inches:
Projection distance = (0.807 ´ diagonal size) - 2.756
p
Centimeters:Projection distance = (2.0497 
´ diagonal size) - 7.0002
 
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							Focusing and Positioning the Screen Image
69
Focusing and Positioning the Screen Image
When an image appears on screen, check that it is in focus and 
correctly positioned on the screen. 
  
p
To focus the image, rotate the focus ring (the inside ring on the 
lens). 
p
To adjust the size of the image, rotate the zoom ring (the outside 
ring). Rotate the zoom ring clockwise to make the screen image 
larger or counterclockwise to make it smaller. 
Note: You can’t adjust the screen image size with the fixed short throw 
lens.
zoom ring
focus ring
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If you need to raise or lower the image on the screen, extend or retract 
the two feet at the bottom of the projector as follows:
1. Stand behind the projector and support the front of it while you 
lift up on the foot adjust levers, located above the feet. This 
unlocks the adjustable feet so they can move up and down. Don’t 
let the projector drop.
Caution: Don’t hold or lift the projector by its lens. This can damage 
the lens.
2. While lifting the levers, raise or lower the projector until the screen 
image is correctly positioned.
3. Release the levers to lock the feet in their new position.
4. If you want to fine-tune the height of the projector, turn the 
adjustable feet clockwise to raise the height, and counterclockwise 
to lower the height.
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