SKU: 40404361881

Marshall - 2.80 mm to 8 mmf/1.2 - Aspherical Varifocal Lens for CS Mount

Sale price$177.37 Regular price$197.08
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Description

Marshall - 2.80 mm to 8 mmf/1.2 - Aspherical Varifocal Lens for CS MountThe Marshall 2. 80 mm to 8 mmf 1. 2 Aspherical Varifocal Lens for CS Mount is engineered for professional surveillance setups that demand exceptional image clarity across the full lens zoom range. Built for HD, UHD, and 4K security systems, this versatile lens delivers crisp, high contrast scenes with precise edge definition, even in challenging lighting. Its 2. 88 mm focal length and bright f 1. 2 maximum aperture make it an ideal choice for indoor

The Marshall 2.80 mm to 8 mmf/1.2 Aspherical Varifocal Lens for CS Mount is engineered for professional surveillance setups that demand exceptional image clarity across the full lens zoom range. Built for HD, UHD, and 4K security systems, this versatile lens delivers crisp, high-contrast scenes with precise edge definition, even in challenging lighting. Its 2.8–8 mm focal length and bright f/1.2 maximum aperture make it an ideal choice for indoor and outdoor cameras alike, enabling accurate facial recognition, license plate capture, and scene detail without sacrificing frame quality. Designed with high-precision aspherical elements and low-dispersion glass, the lens minimizes distortion and aberrations while preserving true-to-life color and contrast across the image plane.

  • 2.80 mm to 8 mm focal length offers a flexible 2.9x optical zoom range, letting you cover wide areas or zoom in for detailed close-ups without replacing lenses.
  • Bright f/1.2 aperture ensures superior low-light performance, enabling clearer captures in dim environments, reduced motion blur, and more reliable target identification after dark.
  • Aspherical elements and low-dispersion glass minimize spherical aberrations and chromatic dispersion, delivering high optical MTF, superior sharpness, and reduced color fringing across the entire zoom range.
  • CS-mount design provides straightforward integration with a wide range of CCTV, IP, and security cameras, delivering a compact, compatible solution for modern surveillance deployments.
  • HD/UHD/4K compatibility specifically tailored for high-resolution cameras, ensuring the lens exploits the sensor’s pixel density to produce crisp, detail-rich imagery ideal for forensic analysis and evidence collection.

Technical Details of Marshall - 2.80 mm to 8 mmf/1.2 Aspherical Varifocal Lens for CS Mount

  • Focal length: 2.8 mm to 8 mm (2.9x optical zoom)
  • Aperture: Maximum f/1.2 for enhanced low-light performance
  • Mount: CS-mount, designed for broad compatibility with surveillance cameras
  • Optics: Aspherical elements and low-dispersion glass to minimize distortion and aberrations
  • Resolution and performance: Optimized for HD, UHD, and 4K imaging with high optical MTF
  • Construction: Compact, robust design suitable for diverse installation scenarios

How to Install Marshall - 2.80 mm to 8 mmf/1.2 Aspherical Varifocal Lens for CS Mount

To install this varifocal CS-mount lens, ensure you follow proper safety and handling practices for your surveillance equipment.

1. Power down the camera and any connected equipment before removing the existing lens or covering cap. This reduces the risk of static discharge and wiring damage.

2. Remove the current lens (if applicable) by loosening the mounting screws and carefully detaching it from the CS mount. Gently set aside any adapters or rings that may be in place.

3. Inspect the CS mount threads and housing for debris. A clean, unobstructed mount ensures proper seating and accurate focus calibration once the new lens is installed.

4. Align the Marshall varifocal lens with the camera’s CS mount, ensuring the lens is seated smoothly without cross-threading. Begin threading the lens by hand to avoid cross-thread damage, then tighten with the appropriate tool to the manufacturer’s recommended torque.

5. Connect any iris or zoom control cables if the lens offers motorized features, or prepare for manual zoom and focus adjustments. Power on the camera and confirm live video feed appears on your monitor.

6. Adjust zoom and focus to achieve a sharp image across the desired field of view. If the lens supports manual iris control, set the aperture to balance exposure, contrast, and noise in your shooting environment. Lock the zoom and focus settings with the provided screws to maintain consistency.

7. Perform a final check across the frame—verify edge-to-edge sharpness, monitor distortion correction, and confirm the lens maintains steady performance across the full focal range. Make any minor adjustments as needed to optimize image quality for your specific scene and lighting conditions.

Frequently asked questions

  • What is the focal length range of this lens? The lens covers 2.8 mm to 8 mm, providing a 2.9x optical zoom range suitable for wide-angle surveillance to tight close-ups.
  • What camera mounts are supported? It uses a CS-mount, which is compatible with a wide array of standard surveillance cameras and can be adapted to many CS-compatible housings and enclosures.
  • Is the lens suitable for 4K security systems? Yes. The design targets HD, UHD, and 4K imaging, delivering high-resolution detail with crisp edge definition for modern security workflows.
  • Does the lens require motorized control? The product is described as a varifocal lens with potential manual zoom and focus adjustment. If your installation uses motorized zoom/focus, confirm compatibility with your camera/controller, since some variants are manually operated.
  • What imagery benefits does the aspherical design provide? The aspherical elements reduce aberrations and distortion, improve sharpness across the frame, and help preserve color fidelity—critical for reliable identification in surveillance footage.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40404361881

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