The depth of field is necessary to understand when choosing the correct lenses and configurations for your company’s CCTV. The depth of field refers to the portion of the environment that is in focus when shown on the monitor. Which of the following is incorrect?

A.
The depth of field varies depending upon the size of the lens opening, the distance of the object being focused on, and the focal length of the lens

B.
The depth of field increases as the size of the lens opening decreases

C.
The subject distance increases, or the focal length of the lens decreases

D.
If the organization needs to cover a large area and not focus on specific items, it is best to use a wide-angle lens and a large lens opening

Explanation:
The depth of field is necessary to understand when choosing the correct
lenses and configurations for your company’s CCTV. The depth of field refers to the
portion of the environment that is in focus when shown on the monitor. The depth of
field varies depending upon the size of the lens opening, the distance of the object
being focused on, and the focal length of the lens. The depth of field increases as
the size of the lens opening decreases, the subject distance increases, or the focal
length of the lens decreases. So, if you want to cover a large area and not focus on
specific items, it is best to use a wide-angle lens and a small lens opening.