definition 2.812mm varifocal lens designed for flexible surveillance installations. Combines a wide focal range, fast aperture, and auto iris control to deliver clear, usable images in changing conditions. Key benefits Adjustable field of view: 2.812mm varifocal range lets you set wideangle coverage or tighter zoom without changing lenses. Consistent exposure in mixed lighting: Auto iris adjusts automatically to maintain proper exposure when light levels change. Strong lowlight performance: F1.4 aperture gathers more light for clearer, sharper images in dim environments. Simple installation and integration: Built for CS mount box cameras for straightforward mounting and compatibility with common surveillance systems. Image quality for analysis and evidence: definition optics help capture details needed for monitoring and postevent review. Features and practical points Focal length: 2.812mm varifocal for flexible framing and scene composition. Aperture: F1.4 for improved sensitivity in low light. Iris: Auto iris functionality for dynamic lighting conditions. Mount: CS mount compatibility for easy fit to CS mount box camera bodies. Use case friendly: Optimized for surveillance tasks where adjustable zoom and lowlight clarity matter. Typical applications Retail and storefront monitoring: Wideangle to track general floor activity, with zoomin capability to focus on point of or incidents. Parking lots and perimeter security: F1.4 aperture and auto iris improve visibility at dusk and night while allowing focal adjustments to cover drive lanes or entry points. Warehouses and loading docks: Flexible focal range helps monitor large indoor spaces and zoom on specific aisles or loading areas for incident review. Compatibility and installation Designed to mount directly to CS mount box cameras for quick installation and integration into existing camera systems. Suitable for use where reliable exposure control and lowlight imaging are required without frequent manual adjustment. This lens provides a practical combination of variable focal control, fast aperture, and automatic exposure management for a wide range of surveillance environments.