Visual Principles of Design

Question 1

Text height x 150 =

Answer 1

Maximum distance from the screen

Question 2

If the text heigh is 3”, the maximum viewing distance is ____________

Answer 2

37.5 feet

Question 3

The first row of a viewing area should not be closer than the screen _________

Answer 3

Width

Question 4

A good viewing area is ____ degrees off-axis in either direction

Answer 4

45

Question 5

An image is 60 inches high, with an aspect ratio of 16:9
What is the width of the image?

Answer 5

106.7 inches

Question 6

A conference room requires videoconferencing and AV presentation capabilities. Which of the following design elements are defined by architectural dimension and orientation of the room?

• Display Size
• Display Type
• Display aspect ratio
• Display Brightness

Answer 6

Display size

Question 7

Used to measure light coming directly from a source

Answer 7

Incident meter

Question 8

Spot meter is used to measure the ______________

Answer 8

light reflected off an object back to the meter

Question 9

Three units of light measure in AV industry

Answer 9

• Lumens
• Lux
• Footcandles

Question 10

Projectors use ______ to describe light output

Answer 10

Lumens

Question 11

Quantitative measure of the brightness of a light source or illuminated surface

Answer 11

Luminance

Question 12

System Black is ________

Answer 12

Lowest level of luminance a system is capable of producing.

Question 13

Relationship between the brightest color (white) and the darkest (Black)

Answer 13

Contrast Ratio

Question 14

What’s the Projected Image System Contrast Ratio for basic decision making?

Answer 14

15:1

Question 15

For measuring Contrast Ratio, is recommended to measure from how many viewing positions?

Answer 15

5

Question 16

Refers to the distance between the projector and screen, factoring lens type and manufacturer specs.

Answer 16

Throw Distance

Question 17

Projector has a throw ratio of 2.5:1
The screen width 72 inches
What is the Throw Distance?

Throw Distance = Screen Width * Throw Ratio

Answer 17

180 inches

Question 18

Is the ability of a projection screen to redirect projected light

Answer 18

Screen Gain

Question 19

What is the recommended highest level of ambient lighting level illuminating a front-projection screen withing a conferencing space?

Answer 19

5 footcandles or 50 lux

Question 20

A matte projection screen has a gain of _____

Answer 20

1

Question 21

Lamp life is defined as the time the bulb reaches ____ percent of initial output

Answer 21

50%

Question 22

In a videowall design, _________ is the process of adjusting the edges of multiple projected images

Answer 22

Blending