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In the theater of environmental protection, forest fire prevention is a race conducted against the most unforgiving of adversaries: time. In addition to manual patrol, advanced technologies such as drones and satellite monitoring are often used. However, when it comes to real-time monitoring, the most effective approach is integration of dual-spectrum long-range PTZ cameras, powered by harmonic transmission and AI-driven diagnostics . 1. The Optical Powerhouse: Why Focal Len

In the world of high-end surveillance, “seeing” is only half the battle. When a security camera is equipped with a focal length of 500mm, 800mm, or even 1200mm, it ceases to be a mere camera and becomes a high-precision optical instrument. At these extreme distances, the Field of View (FOV) is so narrow that the slightest mechanical imperfection is magnified into a violent image tremor. To achieve the "Triple Threat" of modern surveillance— ultra-long-range monitoring, heavy