Describe the function of a camera's field of view (FOV).

The function of a camera's field of view (FOV) is to define the extent of the observable area captured by the camera. This refers to the total angle or region visible through the lens of the camera, which dictates how much of the scene will be captured in a single image or video frame. A wider FOV allows the camera to capture a larger area, which can be particularly useful in surveillance settings or when trying to cover expansive spaces. Conversely, a narrow FOV focuses on a smaller area, providing detailed views of specific subjects but potentially missing out on surrounding context.

Understanding FOV is critical for configuring cameras for specific applications, such as monitoring large open areas or tight spaces. The other choices discuss aspects of the camera that, while important, do not relate to the FOV. The resolution pertains to the detail captured in the image, the frame rate concerns how frequently images are captured, and color accuracy deals with how true-to-life the captured colors are in the images. None of these factors define the field of view.