FUJINON VDLYV10X5B-S Varifocal Mount Auto Iris Lens YV10X5B-SA2L 1/3 5-50MM F1.3-T360

( Brand: Fujinon ), ( Manufacturer Part Number: VDLYV10X5B-S ), ( Part Type: Mount )

Review FUJINON 1/3 Inch 5-50mm Varifocal Cs Mount Dc Auto Iris Lens

The **Fujinon VDLYV10X5B-S/YV10X5B-SA2L 1/3" 5-50mm f/1.3-T3.60 CS Mount Auto Iris Lens** is a high-performance, ultra-wide-angle varifocal lens designed for professional surveillance, security, and industrial applications where exceptional image quality, reliability, and adaptability are paramount. Engineered with Fujinon s renowned **Variable Density Lens (VDL) technology**, this lens delivers an exceptional balance of low-light performance, sharpness, and optical clarity across its entire zoom range, making it ideal for demanding environments such as traffic monitoring, perimeter security, and high-resolution CCTV systems. The **5-50mm focal length range** provides a versatile field of view, allowing operators to switch seamlessly between wide-angle coverage for broad area surveillance and telephoto reach for detailed object identification, all while maintaining a consistent 1/3" sensor format for compatibility with a wide range of digital cameras and recording devices.

One of the standout features of this lens is its **f/1.3 maximum aperture**, which ensures superior low-light performance, reducing the need for excessive infrared illumination while still capturing crisp, noise-free images even in challenging lighting conditions. The **T3.60 designation** indicates its compatibility with both visible and infrared (IR) lighting sources, making it a versatile choice for systems that require seamless transitions between natural light and artificial illumination. The **auto iris function** further enhances its adaptability, automatically adjusting the aperture to maintain optimal exposure across varying light conditions, thereby reducing the burden on the camera s electronic controls and improving overall system stability. This intelligent feature is particularly valuable in dynamic environments where lighting levels fluctuate rapidly, such as urban streets or outdoor industrial sites.

Constructed with Fujinon s **high-precision optical elements**, including aspheric and low-dispersion glass, this lens minimizes chromatic aberrations and spherical distortion, ensuring razor-sharp images with vibrant color fidelity and minimal geometric distortion. The **CS mount interface** provides a seamless connection to modern digital cameras, while the **SA2L (Super Aspheric 2-Layer) coating** enhances light transmission and reduces glare, further boosting image clarity and contrast. The lens s robust mechanical design incorporates weather-sealed components, making it resistant to dust, moisture, and temperature variations, which is essential for outdoor or harsh indoor applications where reliability is non-negotiable. Additionally, the **compact and lightweight construction** ensures ease of installation and integration into existing surveillance systems without compromising performance.

For applications requiring advanced features, the **YV10X5B-SA2L variant** includes an **auto-focus capability**, allowing for precise manual or motorized adjustments to maintain critical focus on moving targets or objects at varying distances. This is particularly useful in applications like traffic enforcement, where maintaining sharp focus on license plates or vehicles is crucial. The lens s **wide dynamic range** ensures that both bright and dark areas within the frame are captured with clarity, reducing the need for post-processing adjustments and improving real-time monitoring efficiency. Whether deployed in high-security facilities, smart city infrastructure, or industrial automation, the Fujinon VDLYV10X5B-S/YV10X5B-SA2L lens sets a new standard for optical excellence, combining cutting-edge technology with uncompromising durability to deliver superior surveillance performance in even the most demanding scenarios.

### **Pros and Cons of the Fujinon VDLYV10X5B-S/YV10X5B-SA2L (1/3" 5-50mm f/1.3 T3.6 Auto Iris Varifocal Lens)**

1. **Wide Zoom Range (5-50mm in 1/3" format)**

- Offers significant flexibility for various applications, including surveillance, security, and monitoring. The 5mm end provides wide-angle coverage, while 50mm allows for tighter framing, useful for detailed inspections or long-distance monitoring.

2. **Fast Aperture (f/1.3)**

- A wide maximum aperture improves low-light performance, reducing the need for excessive illumination. This is particularly useful in night vision or low-light surveillance scenarios.

3. **Auto Iris Functionality**

- Automatically adjusts aperture based on ambient light conditions, ensuring consistent image exposure without manual intervention. This is ideal for dynamic environments where lighting changes frequently.

4. **Compact and Lightweight Design**

- The lens is relatively small and portable, making it suitable for installations where space is limited, such as on drones, handheld devices, or compact cameras.

5. **CS Mount Compatibility**

- The CS (C-mount) mount is widely supported across various surveillance cameras, PTZ cameras, and industrial cameras, offering versatility in integration.

6. **Good Low-Light Performance**

- The combination of f/1.3 aperture and auto iris helps maintain image clarity in dimly lit conditions, reducing the reliance on artificial lighting.

7. **Durable and Rugged Build**

- Fujinon lenses are generally known for their robustness, making this lens suitable for outdoor or harsh environments where durability is important.

8. **Versatile Applications**

- Security surveillance (wide-angle monitoring)

- Traffic monitoring

- Industrial inspections

- Drone or handheld camera attachments

- Medical or scientific imaging (where 1/3" sensors are used)

---

1. **Fixed Focal Length Range Limitations**

- Ultra-wide-angle applications (e.g., 3-8mm) may require additional lenses.

- Telephoto-heavy applications (e.g., 80mm ) may need a separate lens.

- The zoom range is fixed, so users cannot manually adjust focus or zoom without the auto-iris system, which may limit creative control in some setups.

2. **Potential for Lens Flare in Bright Light**

- The fast f/1.3 aperture can introduce lens flare or ghosting in direct sunlight or high-contrast scenes, which may affect image quality in outdoor surveillance.

3. **Auto Iris May Introduce Artifacts**

- Auto iris systems can sometimes cause slight exposure inconsistencies or "iris hunting" (rapid aperture adjustments) in rapidly changing light conditions, leading to minor image noise or flickering.

4. **1/3" Sensor Compatibility**

- The lens is designed for 1/3" sensors, which are common in budget surveillance cameras but may not be ideal for higher-resolution applications (e.g., 4K or professional video). If upgrading to larger sensors later, the lens may not perform optimally due to field-of-view limitations.

5. **Limited Manual Controls**

- As an auto-iris lens, there is no manual aperture control, which may be a drawback for users who prefer fine-tuning exposure settings.

6. **Potential for Distortion at Extremes**

- Varifocal lenses can sometimes exhibit barrel or pincushion distortion at the widest or narrowest settings. While Fujinon lenses are generally well-corrected, this may still be a minor issue in some applications.

7. **Cost Relative to Performance**

- While not extremely expensive, the lens may be priced higher than standard fixed focal lenses or lower-end varifocal lenses, and its performance may not justify the cost for very specific use cases.

8. **Compatibility with Non-Standard Cameras**

- Some newer or high-end cameras may not support auto-iris lenses seamlessly, requiring additional configuration or adapters.

---

The Fujinon VDLYV10X5B-S/YV10X5B-SA2L is a **highly versatile, low-light capable varifocal lens** that excels in surveillance, security, and monitoring applications where a wide zoom range and automatic exposure control are beneficial. Its fast aperture (f/1.3) and auto iris make it well-suited for dynamic environments, while its compact size and CS mount ensure broad compatibility.

However, its fixed zoom range and lack of manual controls may limit its use in applications requiring precise focus or creative framing. Additionally, potential issues like lens flare or auto-iris artifacts in extreme conditions should be considered.

- You need a **budget-friendly, all-in-one varifocal lens** for surveillance, security, or general monitoring.

- Your application involves **low-light or dynamic lighting conditions**, where auto iris and fast aperture are advantageous.

- You require **CS mount compatibility** with 1/3" sensors (common in budget cameras).

- You prioritize **portability and ease of use** without needing manual adjustments.

- You need **ultra-wide-angle or ultra-telephoto** capabilities beyond 5-50mm.

- You require **high-resolution imaging** (e.g., 4K or larger sensors), where a fixed focal lens or higher-end optics may perform better.

- You prefer **manual control** over aperture or focus.

- Your budget allows for **higher-end lenses** with better distortion correction or wider zoom ranges.

**Final Verdict:** This lens is an **excellent choice for general-purpose surveillance and monitoring** where versatility and low-light performance are key. For specialized or high-end applications, consider complementary lenses or fixed focal alternatives.

Details:

We buy all model's of photography equipment from old half-frames to the new digital format, lenses, and accessories. Good luck and have fun. Items with free shipping are only shipped to the 48 contiguous USA.: Includes, Fujinon 1/3 5-50mm Varifocal F1.3-T360 CS Mount DC Auto Iris Lens.

Original Box.

part #: vdlyv10x5b prices

• $23.90-$40.00

specifications surveillancegadgetgo:

• brand: Fujinon
• mpn: Vdlyv10x5b-s
• part type: Mount

payments surveillancegadgetgo:

• other
• credit card: Diners-club
• wallet: Google-pay

offer surveillancegadgetgo:

• availability: In Stock
• best offers: True
• started: March 9, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0

shipping surveillancegadgetgo:

• type: Calculated
• transit: 3-7 Days
• service: UPS Ground, UPS 2nd Day Air, UPS Next Day Air Saver
• carrier: UPS
• cost: $0.00
• class: Standard, Expedited, One-day

returns surveillancegadgetgo:

• paid by: Seller
• method: Money back
• policy: Returns Accepted
• time: 30 Days

seller surveillancegadgetgo:

• rating: 99.8%
• city: Chattanooga, Tennessee
• # reviews: 66861

general surveillancegadgetgo:

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

Fujinon VDLYV10X5B Is Similar To:

• Fujinon Vdlfj3mp1550 3 Mp 15 To 50mm Day night Vari-focal 3.3x Zoom Lens Sku 1710337 (48.4% similar) We buy all model's of photography equipment from old half-frames to the new digital format, lenses, and accessories. Items with free shipping are only shipped to the 48 contiguous USA. Good luck and have fun.: includes, Fujinon 3 mp 15 to 50MM day/night vari-focal 3.3X zoom lens...(August 5th, 2024)
• Fujinon Yv10x5hr4a-sa2l 5-50mm F 1.6 T360 10x Zoom Cs-mount Lens For 1.3 Megapixel Cameras (48.4% similar) It features a built-in nd filter of T360 to support high sensitivity cameras. In addition to 10X zoom, the lens has a broad range of focal length that ranges from 5-50MM. The lens is designed with a high-accuracy esoteric lens, low-dispersion glass and high refractive-index glass, which maximize ...(August 28th, 2024)
• Fujifilm Yv10x5hr4a-sa2 Fujinon Ccrv Lens 1.3 Inch Cs (28.2% similar) Usually less. Everything is packaged carefully to ensure it arrives safely...(June 3rd, 2025)
• Fujinon Fe185c057ha-1 2 3 Inch 1.8mm F 1.4 C-mount Fish-eye Lens For 5mp Cameras (47.7% similar) These charges must be borne by the recipient. Items must be in the original, undamaged manufacturers packaging with all materials, including instruction booklet's, packing inserts, and blank warranty cards. Memory cards and any other blister pack items are not returnable once opened. The Fujinon ...(July 9th, 2025)