What are the main functions of a lens or lens assembly on a camera in a surveillance system?

Lens 2

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Other
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University
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Hard

Sheikh Fawazi
Used 2+ times
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Defining the field of view
Controlling the amount of light passing through to the image sensor
Focusing by adjusting elements within the lens assembly
All of the above
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the amount of light passing through a lens affect the quality of the picture in a surveillance system?
The more light that passes through, the worse the quality of the picture
The less light that passes through, the better the quality of the picture
The more light that passes through, the better the quality of the picture
The amount of light does not affect the quality of the picture
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main function of a lens in a security camera?
Capture sound for audio recordings.
Define the field of view (how much of the scene is seen).
Connect the camera to the security system.
Power the camera with electricity.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What factors affect the size and clarity of the image quality in a surveillance system?
Distance from the scene
Focal length and Field of view
Lighting and format
All of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the selection of a lens critical in a surveillance system?
It directly affects the size, shape, and sharpness of the image
It indirectly affects the size, shape, and sharpness of the image
It has no effect on the size, shape, and sharpness of the image
It only affects the lighting of the image
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which type of environment is a fixed lens typically used?
Outdoor environments where the viewing angle needs to be adjusted
Indoor environments where the viewing angle does not need to be adjusted
Outdoor environments where the scene lighting is constantly changing
Indoor environments where the iris needs to be adjusted
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a varifocal lens differ from a fixed lens?
A varifocal lens allows the user to manually adjust the camera's lens, while a fixed lens cannot be adjusted by the user
A varifocal lens is recommended for outdoor conditions, while a fixed lens is recommended for indoor conditions
A varifocal lens offers a range of focal length, while a fixed lens only offers one focal length
A varifocal lens is not recommended for outdoor conditions, while a fixed lens is recommended for outdoor conditions
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