How ‘clear’ Is Your Camera Knowledge?

15 Questions | By SDMMagazine | Last updated: Mar 21, 2022 | Total Attempts: 140

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SDM Magazine February 5-Minute Tech Quiz

Questions and Answers

1.

Cameras are able to do which of the following?
- A.
  
  Recognize a known person.
- B.
  
  Detect a person.
- C.
  
  Identify an unknown person.
- D.
  
  All of the above.
- E.
  
  None of the above.
2.

Which of the following camera lens sizes will produce the widest angle image?
- A.
  
  1 in. CCD
- B.
  
  2/3 in. CCD
- C.
  
  1/2 in. CCD
- D.
  
  1/3 in. CCD
3.

A ______ lens will produce the largest distorted image.
- A.
  
  Wide angle
- B.
  
  Macro
- C.
  
  Zoom
- D.
  
  Fisheye
4.

The field of view is ______.
- A.
  
  Also known as the focal length.
- B.
  
  The horizontal and vertical area that the camera is supposed to be seeing.
- C.
  
  Solely dependent upon the size of the camera “chip.”
- D.
  
  Calculated by determining the distance of the imager to the front of the camera lens.
5.

Professional photography lenses are interchangeable with CCTV designed lenses and produce a better quality image, but the cost is very high.
- A.
  
  True
- B.
  
  False
6.

Depth of field is ______.
- A.
  
  The distance between the closest object and the farthest object in view that is in focus.
- B.
  
  Determined by the amount of light entering the lens.
- C.
  
  Not important in determining placement of a camera.
- D.
  
  All of the above
- E.
  
  None of the above
7.

The cost of color cameras is so prohibitive that most videos from locations such as convenience stores are black and white.
- A.
  
  True
- B.
  
  False
8.

When transmitting video over the Internet, which of the follow is true?
- A.
  
  Quality is not affected by the amount of cameras viewed.
- B.
  
  Resolution increases as the frames per second decreases.
- C.
  
  The more cameras, the more bandwidth is needed.
- D.
  
  Cameras cannot be viewed over anything other than an MFVN.
9.

Using a lens with higher quality glass elements will produce better images.
- A.
  
  True
- B.
  
  False
10.

Cameras are just one component of a complete integrated security solution.
- A.
  
  True
- B.
  
  False
11.

Fill in the blanks: ______ lux = ______ footcandles.
- A.
  
  1 / 0.5
- B.
  
  0.5 / 1
- C.
  
  1 / 0.093
- D.
  
  1 /1000
12.

Which of the following provide the greatest percentage of reflectivity?
- A.
  
  White plaster
- B.
  
  Snow
- C.
  
  A white painted wall
- D.
  
  An aluminum building
13.

The following are all types of high-intensity discharge lamps except
- A.
  
  Mercury.
- B.
  
  Xenon.
- C.
  
  Metal-arc.
- D.
  
  Sodium.
- E.
  
  All are high-intensity discharge lamps
- F.
  
  None are high-intensity discharge lamps
14.

The Inverse Square Law states that an object
- A.
  
  That is twice the distance from the source will receive half the amount of illumination.
- B.
  
  That is twice the distance from the source will receive one quarter the amount of illumination.
- C.
  
  Double the distance away from a source will receive half the field of view.
- D.
  
  Moved two times the distance away from a light source will receive only half of the available illumination.
15.

Calculating field of view and angle of views all require understanding
- A.
  
  Rhombus.
- B.
  
  Squares.
- C.
  
  Triangles.
- D.
  
  Rectangles.