550mm Manual Varifocal Lens with 50mm FixedFocal Length Construction Compact zoom lens for CS mount cameras that lets you change field of view and set precise focus manually. Key benefits Flexible framing: 550mm focal range covers wide to telephoto perspectives in one lens, reducing the need to swap optics for different scenes. Precise control: Manual zoom and focus rings provide accurate adjustment for sharp images and exact composition. Consistent optical design: Built around a 50mm fixedfocal length construction for predictable image geometry across the zoom range. Easy integration: Directly compatible with CS mount camera systems for quick installation and secure fit. Practical for installers: Single lens solution for mixed surveillance or inspection setups where variable focal length is required. What it does and why you need it Provides a single, adjustable lens that adapts to changing scene requirements, from broader coverage to detailed closein views. Lets technicians and integrators finetune focus and framing on site without electronic control, which simplifies setup and reduces failure points. The 50mm fixedfocal length construction gives repeatable optical behavior helpful for aligning multiple cameras or comparing images over time. Important attributes Function: Manual varifocal zoom lens with independent manual focus and zoom control. Focal length: 550mm variable range with 50mm fixedfocal length construction in the optical design. Mount compatibility: CS mount compatible for direct use with CS mount cameras and adapters where required. Performance: Wide to telephoto coverage in one unit, intended for reliable, manual adjustment of field of view and focus. Form factor: Designed for camera installations requiring a compact, adjustable optical solution. Typical applications Video surveillance: Indoor or outdoor CCTV cameras where coverage needs change or where a single lens must serve multiple viewing distances. Industrial inspection: Machine vision and production line cameras that require adjustable magnification for parts of different sizes. Traffic and perimeter monitoring: Situations that need quick reframe between wide situational awareness and tighter detail views. Who this is for Security integrators, system installers, and machine vision engineers who need a flexible, manually adjustable lens compatible with CS mount cameras. What to expect A manually operated zoom lens that simplifies field adjustments and integration into CS mount camera systems. Use the zoom ring to set approximate framing, then use the focus ring to sharpen the image. Compatibility note Designed for cameras and housings that accept CS mount optics. Check camera flange distance and sensor format to confirm expected coverage and field of view.