Which is NOT a known characteristic of the Department-issued thermal imaging camera?

The correct choice identifies that thermal imaging cameras, including those issued by the department, do not see through glass or plastic. This is because these materials can block thermal radiation, preventing the camera from detecting the heat signatures of objects on the other side. Instead, thermal imaging cameras are designed to detect infrared radiation emitted by heat sources. When glass or plastic is present, it acts as a barrier to this radiation, rendering the images on the other side unclear or invisible to the camera.

The other characteristics mentioned are true for department-issued thermal imaging cameras. They indeed have a field of view of approximately 50 degrees, which allows users to monitor a wide area effectively. The focal point of around 3 feet ensures optimal clarity for observing objects at a certain distance, enhancing the user's situational awareness. Lastly, these cameras are designed to scan vertically from ceiling to floor, which is particularly useful in search and rescue operations or assessing fire conditions in a room. This functionality emphasizes the camera's utility in emergency incidents where understanding the environment is critical.