How ‘clear’ Is Your Camera Knowledge?
SDM Magazine February 5-Minute Tech Quiz
- 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.
Questions: 10 | Attempts: 2113 | Last updated: May 24, 2021
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