CCTV Camera Selection & Placement Flashcards

Which camera type is best suited for monitoring a large open parking lot with varying light conditions throughout the day?

Answer: Wide dynamic range (WDR) PTZ camera

A WDR PTZ camera handles high-contrast lighting and can pan to cover a large parking lot area effectively.

What is the minimum recommended camera resolution for capturing license plate numbers at a distance of 50 feet?

Answer: 1080p Full HD

1080p Full HD provides sufficient pixel density to resolve license plate characters at distances up to approximately 50 feet.

A camera mounted at a corner of a building needs to cover two adjacent sides. Which lens type is most appropriate?

Answer: Wide-angle lens

A wide-angle lens provides a broader field of view, allowing a single corner-mounted camera to cover two adjacent building sides.

When selecting cameras for an indoor retail environment, which feature is most important to prevent blind spots near shelving units?

Answer: Varifocal lens with wide minimum angle

A varifocal lens with a wide minimum angle lets the installer adjust the field of view to eliminate blind spots around shelving.

What camera placement height is generally recommended for facial recognition applications in a standard-height interior corridor?

Answer: 6–7 feet

Mounting cameras at 6–7 feet places the lens near face level, producing the optimal downward angle for facial recognition without excessive distortion.

Which type of camera housing is required when installing surveillance cameras in a food processing facility?

Answer: NEMA 4X stainless steel housing

NEMA 4X stainless steel housings resist corrosion and can withstand high-pressure washdowns common in food processing environments.

A site survey reveals strong backlight from windows in a lobby. Which camera feature directly addresses this challenge?

Answer: Wide dynamic range (WDR)

WDR technology simultaneously captures bright and dark areas of a scene, compensating for the intense backlight from lobby windows.