Input
Screen Aspect Ratio
Screen Size
Screen Gain (projectors only)
Projector Brightness (projectors only)
Horizontal Resolution
Vertical Resolution
Actual Seating Distance (first row)
Actual Seating Distance (back row)
Anamorphic (horizontal expansion) front projector lens?
Screen Dimensions
Screen Diagonal
Screen Width
Screen Height
Pixel Width on screen (dot pitch)
Pixel Height on screen (dot pitch)
Pixel density Horizontal (important for PC monitors)
Pixel density Vertical (important for PC monitors)
Total Number of Pixels
Viewing Distances and Brightness
THX Longest Allowable viewing distance2
SMPTE Longest Recommended viewing distance3
THX Longest Recommended viewing distance2
Shortest recommended viewing distance5
Visual Acuity "ideal" viewing distance4
Visual Acuity Eyesight Compensation (Eyesight of viewer)6
1.78
110
1.1
1500
1920
1080
7.0
20.0
No
126.2
110.0
61.9
0.057
0.057
17.5
17.5
2,073,600
Units
:1
inches
wide
gain
ANSI lumens
pixels
pixels
feet
feet
inches
inches
inches
inches
inches
pixel/inch
pixel/inch
pixels
10.5 feet
9.2 feet
5.2 feet
320.6
279.4
157.2
0.15
0.15
6.9
6.9
2.07
238.2 inches
205.3 inches
169.3 inches
19.9 feet
17.1 feet
14.1 feet
605.1 centimeters
521.4 centimeters
430.0 centimeters
6.05 meters
5.21 meters
4.30 meters
Notes about First Row Seating Distances based on the parameter entered.
First row is close enough to the screen to meet this specification.
First row is close enough to the screen to meet this specification.
First row is close enough to the screen to meet this specification.
78.5 inches
197.0 inches
20 / 20
6.5 feet
16.4 feet
1.0
199.5 centimeters
500.3 centimeters
2.00 meters
5.00 meters
First row is far enough away from the screen to meet this specification.
First row is close enough to the screen that the benefits of a higher resolution display might be noticable.
Field of View Width (first row center)
Field of View Width back row center)
66.4 degrees
25.8 degrees
Screen Brightness1 (projectors only)
34.9 foot-Lamberts
centimeters
centimeters
centimeters
centimeters
centimeters
pixel/cm
pixel/cm
million pixels
3.21
2.79
1.57
1.455
1.455
meters
meters
meters
millimeters
millimeters
Note: sitting closer to the screen gives a wider field of
view.
119.6 cd/m2
Screen brightness (30-70 foot-Lamberts) is acceptable for rooms with some ambient light.
Reverse Screen Brightness to Projector Lumen Calculator (projectors only)
Desired Screen Brightness1
Required Projector Brightness
34.9 foot-Lamberts
1500 lumens
Universal projector throw distance calculator: enter any single screen size and the min/max throw distance published by the manufacturer
For a
110 inch wide screen (not necessarily the size screen you will be using)
the min throw distance is
14.3 feet
and the max throw distance is
19.5 feet
Projector Locations (projectors only)
Minimum screen width throw ratio
Maximum screen width throw ratio
Min throw distance (for screen size entered in cell C8)
Max throw distance (for screen size entered in cell C8)
Max height ratio above screen
Max distance above screen (for screen size entered in cell C8)
1.56
2.13
171.6
234.0
0.50
30.9
times screen width
times screen width
inches
14.3 feet
inches
19.5 feet
times screen height
inches
2.6 feet
435.9 centimeters
594.4 centimeters
4.36 meters
5.94 meters
78.6 centimeters
0.79 meters