GENESIS CCTV MPVL-2812 Camera Lens Varifocal Iris Aspherical 1/3 2.7-12MM

( Brand: Genesis Cctv ), ( Manufacturer Part Number: MPVL-2812 ), ( Type: Lens ), ( Items Included: Camera ), ( Country Of Origin: China ), ( Surveillance Technology: Cctv )

Review GENESIS CCTV Camera Lens Varifocal 1/3 Inch Cs 2.7-12mm Dc iris Aspherical

The **Genesis MPVL-2812** is a high-performance varifocal CCTV camera lens designed to deliver exceptional image clarity and versatility for professional surveillance applications. Engineered with a **1/3" CS-mount** interface, this lens seamlessly integrates with a wide range of security cameras, ensuring compatibility with both analog and IP-based systems. Its **2.7 12mm focal range** provides a flexible zoom capability, allowing users to adjust the field of view from a broad **wide-angle perspective (approximately 110 at 2.7mm)** to a more focused **narrow-angle view (around 23 at 12mm)**, making it ideal for monitoring expansive areas like parking lots, corridors, or large retail spaces while also excelling in detailed close-up surveillance. The **aspherical design** minimizes lens distortion and aberrations, ensuring sharp, high-resolution images with consistent edge-to-edge clarity, even at extreme focal lengths.

A key feature of the **MPVL-2812** is its **DC iris control**, which enables precise adjustment of aperture settings for optimal low-light performance and depth of field. This manual or motorized iris functionality allows operators to fine-tune exposure dynamically, reducing glare from sunlight or artificial lighting while maintaining image quality in varying environmental conditions. The lens is built with durable, weather-resistant materials, ensuring reliable operation in both indoor and outdoor settings, including exposure to dust, moisture, and temperature fluctuations. Its robust construction also contributes to long-term durability, reducing maintenance requirements and extending the lifespan of the surveillance system.

Whether deployed in high-security facilities, public spaces, or industrial environments, the **Genesis MPVL-2812** delivers a balance of adaptability and precision. Its **varifocal range** eliminates the need for multiple fixed lenses, streamlining installation and reducing costs. The lens s **aspherical optics** further enhance image fidelity, making it a preferred choice for applications where detail and accuracy are paramount. By combining flexibility, optical excellence, and rugged reliability, the **MPVL-2812** stands as a dependable solution for modern surveillance needs, empowering users to capture clear, actionable footage with confidence.

### **Pros and Cons of the Genesis CCTV MPVL-2812 Varifocal Lens (1/3" CS, 2.7-12mm, DC-Iris, Aspherical)**

1. **Wide Field of View (FOV) Adjustability** The 2.7-12mm focal range provides flexibility for different surveillance needs. A shorter focal length (2.7mm) offers a broader view, useful for wide-area monitoring, while the longer end (12mm) allows for zooming in on details. This makes it suitable for both general surveillance and targeted observation.

2. **DC-Iris Functionality** The DC (direct current) iris allows for automatic adjustment of aperture size via the camera s control signals. This ensures optimal lighting conditions by preventing overexposure or underexposure, improving image quality in varying light environments.

3. **Aspherical Design** Aspherical lenses reduce spherical aberrations, which can cause distortion or blurring at the edges of the image. This results in sharper, clearer images across the entire field of view, enhancing overall picture quality.

4. **Compatibility with 1/3" CS Mount** The 1/3" CS (C-mount) format is widely used in CCTV cameras, making this lens compatible with a broad range of surveillance systems. It is a standard size, so replacement or upgrading lenses is straightforward.

5. **Versatile Applications** The lens is suitable for indoor and outdoor surveillance, depending on the camera s housing and environmental sealing. It can be used in:

- **Wide-area monitoring** (e.g., parking lots, hallways, or large rooms) at the shorter focal length.

- **Detailed observation** (e.g., cash registers, security checkpoints, or facial recognition) at the longer focal length.

6. **Cost-Effective for Varifocal Needs** Varifocal lenses are often more expensive than fixed lenses, but this lens offers a balanced price for its range and features. It avoids the need for multiple fixed lenses, saving on hardware costs.

7. **Durability and Build Quality** Genesis is a reputable brand known for producing reliable surveillance equipment. The lens is likely built to withstand typical environmental conditions, though specific durability (e.g., resistance to dust or moisture) depends on the camera s housing.

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1. **Limited Zoom Range** While the 2.7-12mm range is useful, it is relatively narrow compared to some high-end varifocal lenses (e.g., 3.6-12mm or 2.8-10mm). For applications requiring extreme wide-angle coverage or significant zoom, this lens may fall short. Users needing broader flexibility might opt for a lens with a wider focal range (e.g., 2.8-12mm or 3.6-100mm for more extreme cases).

2. **Potential for Distortion at Extremes** Even with aspherical design, very wide-angle lenses (e.g., at 2.7mm) can introduce some barrel distortion or edge softness. While aspherical correction mitigates this, it may not be as perfect as lenses with advanced optical coatings or multi-element designs.

3. **DC-Iris Dependency on Camera Compatibility** The DC iris requires the camera to support iris control via DC voltage signals. Some budget cameras or older models may not fully utilize this feature, leading to suboptimal aperture adjustments. Always verify that the camera supports DC iris control before purchasing.

4. **Manual Focus Requirement at Extremes** While the lens is varifocal, fine-tuning focus at the very edges of the zoom range (e.g., 2.7mm or 12mm) may still require manual adjustment. This can be inconvenient in dynamic surveillance setups where quick focus changes are needed.

5. **Potential for Light Leakage or Ghosting** Lower-end varifocal lenses can sometimes suffer from internal reflections or ghosting, especially in high-contrast scenes (e.g., backlit subjects). The aspherical design helps, but this is still a risk with budget lenses.

6. **No Built-in IR Cut Filter** The lens does not mention an IR cut filter, which is essential for color accuracy in mixed lighting conditions (e.g., daylight and artificial light). Without it, color distortion may occur in certain scenarios. Users should ensure the camera has an IR cut filter or consider adding one separately.

7. **Limited Low-Light Performance** The lens itself does not enhance low-light performance; this depends on the camera s sensor and IR capabilities. If the camera lacks good low-light sensors or IR illumination, the lens s performance in dark environments will be limited.

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The **Genesis MPVL-2812 varifocal lens (2.7-12mm, 1/3" CS, DC-Iris, aspherical)** is a **solid, budget-friendly choice** for general surveillance applications where a moderate zoom range and decent image quality are required. Its **DC iris and aspherical design** provide practical advantages for automatic exposure and reduced distortion, making it suitable for indoor and outdoor use in typical security setups.

However, it is **not ideal** for applications requiring **extreme wide-angle coverage, high zoom, or advanced optical performance**. Users with specific needs (e.g., wide-angle security, high-resolution detail, or extreme low-light conditions) may need to consider lenses with:

- A wider focal range (e.g., 2.8-12mm or 3.6-100mm).

- Advanced optical coatings (e.g., Super Aspherical or ED glass).

- Built-in IR cut filters or better low-light compatibility.

For **most standard surveillance needs** (e.g., monitoring hallways, parking lots, or retail spaces), this lens offers a **good balance of cost, flexibility, and performance**. Pair it with a **reliable camera that supports DC iris control** and ensure the camera s sensor and IR capabilities align with your lighting conditions.

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- You need a **versatile, mid-range zoom** for general surveillance.

- Your camera supports **DC iris control** and has a **good sensor/IR system**.

- You prioritize **cost-effectiveness** over extreme optical performance.

- The **1/3" CS mount** is compatible with your existing setup.

- You require **wider-angle coverage** (e.g., for very large areas) Look for a **2.8-12mm or 3.6-12mm lens**.

- You need **higher zoom** (e.g., for facial recognition or detailed monitoring) Consider a **varifocal lens with a longer range (e.g., 3.6-100mm)**.

- Your surveillance involves **extreme low-light conditions** Pair with a **camera with a high-sensitivity sensor or IR illumination**.

- You need **minimal distortion** Opt for a **premium aspherical or ED glass lens** from brands like Sony, Tamron, or Computar.

For **most users**, the Genesis MPVL-2812 is a **practical and cost-effective solution** that meets common surveillance needs without unnecessary complexity.

Details:

New old stock sold as is. Genesis CCTV MPVL-2812 Camera Lens Varifocal VF 1/3 CS 2.7-12mm F1.2 DC-Iris 3 megapixel Aspherical Day-Night.

part #: mpvl2812 price

• $50.00

specifications surveillancegadgetgo:

• brand: Genesis Cctv
• mpn: Mpvl-2812
• type: Lens
• items included: Camera
• country of origin: China
• surveillance technology: Cctv

general surveillancegadgetgo:

• Home Surveillance > Home Surveillance Parts Accessories > Other Surveillance Parts Accessories
• condition: New

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• options: Ship-to-home
• sold: 0
• quantity: 2
• started: April 25, 2026
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• policy: No Returns

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