CCTV Camera Selection & Placement Flashcards
7 cards from real CST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 CCTV Camera Selection & Placement flashcards as text
What is the key advantage of a multi-sensor panoramic camera over multiple individual cameras covering the same area?
Answer: Eliminates parallax gaps between adjacent camera views
Multi-sensor panoramic cameras use a single housing with aligned sensors, eliminating the parallax gaps and blind spots that occur when stitching separate camera images.
When mounting a camera outdoors on a pole subject to high winds, what mechanical specification is most critical?
Answer: Wind load rating of the mount
The wind load rating of the mount determines whether the camera will stay aligned and structurally secure under the lateral forces generated by high winds.
What is the recommended camera placement strategy at a building's main entrance to simultaneously verify identity and capture tailgating?
Answer: Two cameras: one at face level for ID and one overhead for counting people
A face-level camera captures identifying features while an overhead camera counts bodies passing through, together detecting tailgating and recording identity.
Which lens characteristic determines how much of the scene is in focus at various distances from the camera?
Answer: Depth of field
Depth of field describes the range of distances within which objects appear acceptably sharp in the captured image.
A casino surveillance manager wants to identify card values on a gaming table from a camera mounted 12 feet above. Which specification is most critical?
Answer: High pixel density (pixels per foot) at the table surface
Resolving small card markings requires sufficient pixels per foot at the table surface, making pixel density the primary specification for this application.
What is the main reason surveillance cameras should NOT be aimed directly at light sources such as the sun or bright lamps?
Answer: It can permanently damage the image sensor
Direct exposure to intense light sources can cause irreversible blooming or burn-in damage to the image sensor, permanently degrading image quality.
For a warehouse with 30-foot ceilings, which camera mounting approach provides the best aisle coverage without excessive distortion?
Answer: Bullet cameras mounted at 20 feet angled along the aisle
Mounting bullet cameras at mid-height and angling them along the aisle provides a better viewing angle of aisle activity with less geometric distortion than extreme overhead shots.