CS Mount Lens 4.0mm, 3 Megapixel, Black, Metal and Glass, Fixed Iris, Manual Focus Package includes: 10 pcs Key benefits Capture higher detail for surveillance and monitoring with true 3 Megapixel resolution. 4.0 mm focal length paired with a 1/2.5 inch image format provides a broad field of view for coverage of entrances, corridors, and open areas. Durable metal and glass construction for reliable, long term use in camera installations. Manual focus and fixed iris give straightforward, stable image control where automatic adjustments are not required. CS mount compatibility makes the lens suitable for a wide range of CCTV and machine vision cameras using CS mount lenses. Main features Resolution: 3 Megapixel for clear, detailed imaging. Sensor format compatibility: 1/2.5 inch. Focal length: 4.0 mm for wide area coverage. Iris: Fixed for consistent exposure in steady lighting conditions. Lens type: Manual focus to precisely set focus during installation. Mount: CS mount for direct fit to CS mount camera bodies. Material: Metal and glass construction for durability. Color: Black. Model number: CS Mount Lens. Why customers need this lens Improves image detail for identification and evidence capture compared to lower resolution optics. Eliminates the need for frequent focus adjustments thanks to a stable fixed iris and manual focus setup that is set once at installation. Metal body reduces the risk of damage during installation and long term use. Compatibility and installation Designed for cameras that accept CS mount lenses and support a 1/2.5 inch image sensor format and up to 3 Megapixel resolution. Manual focus requires initial adjustment during installation to set the desired focus distance and scene coverage. Practical applications Retail and office surveillance where detailed facial or item recognition is needed at entry points and aisles. Small to medium warehouses and loading bays for monitoring activity across wide areas. Fixed machine vision or inspection setups that require consistent exposure and reliable optics. Technical summary Color: Black Material: Metal and glass Lens mount: CS mount Resolution: 3 Megapixel Sensor compatibility: 1/2.5 inch Focal length: 4.0 mm Iris: Fixed Lens type: Manual Model number: CS Mount Lens Package includes: 10 pcs of the CS Mount Lens, ready for bulk installation or replacement projects.