Electronic Security Technician Level 1 Practice Exam

The assertion that infrared cameras do not improve visibility for nighttime images is not accurate. Infrared cameras are specifically designed to detect and visualize thermal radiation emitted by objects, which allows them to function effectively in low-light or no-light conditions.

Infrared technology operates by sensing heat rather than relying on visible light, which means that even in complete darkness, an infrared camera can capture images based on the temperature differences between objects in the scene. This capability is particularly valuable in security applications, as it allows for the monitoring of environments where visibility would otherwise be significantly compromised.

The other options suggest varying degrees of functionality for infrared cameras during nighttime. However, the essential characteristic of infrared cameras is their ability to enhance visibility in the absence of visible light, making them a critical tool for night surveillance and security operations.