Axis Communications Updated ANVE Exam Questions and Answers by cataleya

To prevent reflections from built-in IR illuminators from degrading the image quality, an installer can adjust the camera's field of view. By repositioning the camera or slightly altering its angle, the installer can minimize the direct reflection of IR light back into the lens, which often causes glare and reduces image clarity. Axis installation guidelines recommend adjusting the camera’s position to avoid reflective surfaces and ensure optimal use of IR illumination for clear, unobstructed images.

"A weather shield (sunshield) is used to reduce the impact of direct sunlight or glare on the camera lens, improving image quality and protecting the camera from excessive heat and sun exposure."

— Axis Communications Academy, Network Video Fundamentals, 2022

"For outdoor installations, use a weather shield to protect the camera from direct sunlight."

— Axis Installation Accessory Guide

As a person enters the scene, P-frames (Predictive frames) increase in size. P-frames contain only the changes in the image from the previous frame (I-frame or another P-frame). When there is movement or new objects enter the scene, more data is needed to describe the changes, resulting in larger P-frames. References: Axis Communications documentation on video compression and frame types in H.264.

"A longer focal length (such as 48 mm) results in a shorter depth of field compared to shorter focal lengths, meaning only a narrow range of distances will be in focus."

— Axis Communications Academy, Network Video Fundamentals, 2022

"Depth of field decreases as the focal length increases."

— Axis Lens Guide White Paper