Which are the main benefits of OptimizedlR? (Select two)
Answer : C, D
OptimizedIR technology in Axis cameras adjusts the IR illumination to match the camera's field of view. This ensures that the IR light is evenly distributed across the scene, reducing the risk of overexposure and enhancing image quality. Furthermore, this alignment helps to maintain image clarity and detail by preventing hot spots and ensuring a balanced exposure across the entire frame. According to Axis documentation, these benefits help improve the effectiveness of night-time surveillance and reduce the need for additional external IR illuminators.
Question 2
Which applications are typically used with PTZ cameras? (Select three)
Answer : A, C, F
PTZ (Pan-Tilt-Zoom) cameras are typically used for applications such as autotracking, active gatekeeper, and guard tour. Autotracking allows the camera to follow moving objects within its field of view automatically. Active gatekeeper enables the camera to move to a preset position when motion is detected in a specific area. Guard tour is a function that allows the camera to patrol between preset positions at scheduled intervals. These features enhance surveillance capabilities and are commonly implemented in PTZ cameras. Axis Communications' documentation on PTZ camera functionalities details these applications.
Question 3
Image flickering is caused by
Answer : D
Image flickering is often caused by fluorescent lights due to their characteristic rapid on-off cycling. This cycling can interfere with the camera's frame rate, leading to visible flicker in the captured video. Adjusting the camera settings to match the frequency of the fluorescent lights can help reduce this effect. For more information, consult Axis Communications' troubleshooting guides on image flickering.
Question 4
How can existing coaxial cable be leveraged when installing network cameras?
Answer : C
Existing coaxial cables can be repurposed for use with network cameras through the use of media converters. These devices convert the analog signals transmitted over coaxial cables into digital signals that can be used by network cameras, allowing for the continued use of existing cabling infrastructure. This approach can be cost-effective and less disruptive compared to installing new network cables. Axis Network Video documentation provides detailed guidance on the use of media converters to leverage existing coaxial cabling for network camera installations.
Question 5
What feature allows a PTZ camera to maintain a sharp image even when it is pointed above the horizon?
Answer : D
The Sharpdome technology allows PTZ cameras to maintain a sharp image even when pointed above the horizon. This feature uses a specialized mechanical design and advanced image processing to ensure clear, undistorted images across the entire dome, including the critical area above the horizon. Axis Communications has integrated Sharpdome technology into several of their PTZ camera models, as explained in their product specifications and technical white papers.
Question 6
What is a benefit of utilizing external IR illumination with 940 nm?
Answer : B
Utilizing external IR illumination with 940 nm provides the benefit of covert surveillance. IR light at 940 nm is almost invisible to the human eye, making it ideal for discreet monitoring without drawing attention to the presence of the camera. This allows for effective surveillance while remaining undetected by intruders. Axis Communications' product documentation on IR illumination confirms this advantage of 940 nm IR light.
Question 7
How do PTZ cameras use lasers to improve focus?
Answer : B
PTZ cameras use lasers to measure the distance to the target, which allows for quick and accurate focusing. The laser range finder determines the precise distance between the camera and the subject, enabling the camera to adjust its focus optimally. This technology ensures that the camera can focus rapidly and accurately, even in challenging lighting conditions or when the target is moving. Axis Communications' technical specifications for PTZ cameras confirm that laser technology is employed to enhance focus performance by providing target distance information.
All Official Question Types