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An opportunistic attack is characterized by the attacker not being acquainted with the target. These attacks are typically random and take advantage of any available vulnerability rather than being specifically targeted at a particular system or organization. The attacker usually seeks easy targets with known vulnerabilities and acts quickly when an opportunity arises. Axis security documentation describes opportunistic attacks as generally unsophisticated, focusing on exploiting common and readily available weaknesses in systems.

"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

Pixel density describes the number of pixels per meter (or foot) horizontally. This metric is crucial for determining the level of detail that a camera can capture over a given area, affecting the clarity and usability of the video for tasks such as identification and recognition. Higher pixel density results in better image detail. Axis Communications' technical resources on image quality and resolution confirm this definition of pixel density.

"Lightfinder technology provides Axis cameras with extreme light sensitivity, enabling them to deliver high-quality, full color images in extremely low-light conditions."

— Axis Lightfinder Technology Overview

"Lightfinder technology allows for color images in situations where other cameras would only produce black-and-white."

— Axis Communications Academy, Network Video Fundamentals, 2022

The AXIS P3247-LVE provides the greatest deterrence effect. This model is a robust, vandal-resistant network camera designed for outdoor use with advanced features such as IR illumination, advanced video analytics, and a rugged design. Its visible presence and high-quality image capture capabilities serve as a strong deterrent to potential intruders and vandals.

Lightfinder is a technology developed by Axis that allows cameras to maintain color images even in very low light conditions. In dark scenes, Lightfinder automatically adjusts the exposure when an object approaches, enhancing visibility and detail. This feature is particularly useful for capturing clear images in challenging lighting environments without requiring additional lighting. References: Axis Communications product specifications and technical descriptions of Lightfinder technology.

"Motion blur is more prominent when an object moves perpendicularly (across) to the camera because it traverses more pixels per frame, compared to an object moving toward or away from the camera."

— Axis Communications Academy, Network Video Fundamentals, 2022

"Perpendicular movement causes greater pixel change in each frame, resulting in more noticeable motion blur."

— Axis Motion Blur Guide

The main benefit of using Power over Ethernet (PoE) is cost reduction in installation. PoE allows network cables to carry both data and power, eliminating the need for separate power lines and reducing the amount of cabling required. This simplifies installation, reduces material costs, and allows greater flexibility in camera placement. Axis Communications notes that PoE significantly cuts down on installation expenses by streamlining the infrastructure needed for network devices.

A system designer can compare the light sensitivity of network cameras from different manufacturers by checking the specified lux values of the cameras. Lux is a unit of measurement for illuminance, indicating how much light is needed for the camera to produce a usable image. Lower lux values indicate better low-light performance. While field testing can also be useful, lux values provide a standardized and quick reference for comparison. References: Axis Communications product specifications and industry standards on light sensitivity.

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"For reliable identification of a person’s face, Axis recommends a pixel density of at least 250 pixels per meter (80 pixels per foot) on the target area."

— Axis Communications, Design Tool: Pixel Density Recommendations

"Identification: 250 px/m – Needed to identify a person beyond reasonable doubt."

— Axis Communications Academy, Network Video Fundamentals, 2022