Introduction
Thank you for choosing the NiSi Armor FX PRO Nano L395 UV Filter. This high-definition optical glass filter is designed to provide superior lens protection while enhancing image clarity by blocking harmful ultraviolet light. Its robust construction and advanced coatings ensure durability and optimal performance in various photographic conditions.

Figure 1: NiSi Armor FX PRO Nano L395 UV Filter (49mm shown)
Key Features
- Impact and Explosion-Proof Durability: Built with advanced materials to withstand significant impacts, protecting your lens from accidental damage.
- Nano Coating: Features multi-nano coatings for waterproof, scratch-resistant, and dustproof properties, ensuring easy cleaning and longevity.
- Enhanced Image Clarity: High-definition CINE optical glass with 99% light transmittance reduces flare, minimizes reflections, and reproduces neutral colors, ideal for high-megapixel cameras.
- Slim Brass Frame: An ultra-slim 3.5mm brass frame prevents vignetting, even on wide-angle lenses (e.g., 14mm). The textured twill surface provides an easy grip for installation and removal.
- Advanced UV Blocking: Effectively blocks ultraviolet light below 395nm, reducing atmospheric haze and preventing bluish casts in photos, especially in bright outdoor conditions.
- FX Filter Transformation: In the rare event of severe impact causing cracks, the filter is designed to remain intact, preventing glass fragments from damaging the lens and potentially creating unique creative effects.

Figure 2: Demonstrating the filter's impact resistance against a hammer.

Figure 3: Water repellency due to Nano Coating.

Figure 4: The filter's high-definition optical glass ensures no loss in sharpness.
Video 1: Official product video demonstrating the durability and features of the NiSi Armor FX PRO Nano L395 UV Filter.
Setup
1. Verifying Lens Compatibility
Before attaching the filter, ensure it is compatible with your camera lens. The filter size is indicated by the "ø" symbol followed by a number (e.g., ø49mm) on your lens barrel or inside the lens cap. This filter is specifically designed for lenses with a 49mm filter thread.

Figure 5: Locating the filter size on your camera lens.
2. Attaching the Filter
- Carefully align the filter's threads with the threads on the front of your camera lens.
- Gently rotate the filter clockwise until it catches the threads.
- Continue to turn clockwise until the filter is securely fastened. Avoid overtightening to prevent damage to the filter or lens threads.
The filter is equipped with front and back threads, allowing for easy stacking with other camera filters if desired.
Operating the Filter
The NiSi Armor FX PRO Nano L395 UV Filter functions as a continuous protection layer for your lens while simultaneously improving image quality.
- Lens Protection: The primary function is to protect the delicate front element of your lens from dust, scratches, impacts, and other environmental hazards.
- UV Light Reduction: By blocking UV light below 395nm, the filter helps to reduce atmospheric haze and bluish casts, especially noticeable in landscape photography or at high altitudes. This results in clearer, more vibrant images.
- Reduced Reflections: The low-reflection coating minimizes internal reflections and flare, contributing to sharper images with better contrast.

Figure 6: UV absorption curve of the Armor FX filter, demonstrating its effectiveness in blocking light below 395nm.
Maintenance
Proper care will extend the life and maintain the performance of your NiSi Armor FX PRO Nano L395 UV Filter.
- Cleaning: Due to its Nano Coating, the filter is waterproof and oil-proof. For cleaning, use a clean microfiber cloth specifically designed for optical surfaces. For stubborn smudges, a small amount of lens cleaning solution can be applied to the cloth (not directly to the filter).
- Storage: When not in use, store the filter in its protective case to prevent dust accumulation and accidental damage.
- Handling: Always handle the filter by its brass frame to avoid touching the glass surface and leaving fingerprints.

Figure 7: Cross-section illustrating the multi-layered construction of the Armor FX filter, including Nano Coating and explosion-proof layers.
Troubleshooting
- Vignetting: If you observe dark corners in your images, especially with wide-angle lenses, ensure the filter is fully seated and that you are using the correct slim-frame version. The ultra-slim 3.5mm brass frame of this filter is designed to minimize vignetting.
- Reduced Image Quality: Ensure the filter is clean and free from smudges, dust, or moisture. While the filter is designed for high clarity, any obstruction on its surface can affect image quality.
- Filter Cracks: In the unlikely event that the filter glass cracks due to extreme impact, the laminated design prevents shattering into loose fragments. The filter can remain on the lens, protecting it from further damage. This "FX Filter Transformation" can also be used creatively for unique flare effects.

Figure 8: The FX Filter Transformation, where the filter remains intact even after cracking, protecting the lens.
Specifications
| Attribute | Detail |
|---|---|
| Model Number | NIR-AFXUV-49 |
| Filter Size | 49 Millimeters |
| Material | Optical Glass, Brass Frame |
| Coating Description | Multi Nano Waterproof Coating |
| Filter Effect Type | Protection, UV Blocking (L395) |
| Product Dimensions | 1.93 x 1.93 x 0.04 inches |
| Item Weight | 3.17 ounces |
| Manufacturer | NiSi |
Warranty & Support
NiSi stands behind the quality and durability of its products. The NiSi Armor FX PRO Nano L395 UV Filter comes with a lifetime warranty. This warranty covers manufacturing defects and, notably, includes replacement in the event of accidental damage or shattering, ensuring long-term protection for your investment.
For technical support, warranty claims, or any inquiries regarding your NiSi product, please visit the official NiSi website or contact their customer service department. Contact information can typically be found on the product packaging or the brand's official online presence.
Visit the NiSi Store on Amazon for more information and products.





