NiSi Filter UV Pro Nano Huc 43mm

NiSi Filter UV Pro Nano Huc 43mm – Ultra-thin 3.5mm Brass Frame Minimizes Vignetting

The NiSi PRO Nano HUC UV filter for 43mm lenses uses double-sided, multi-coating lens technology combined with high-quality Japanese ultraviolet absorption optical glass. It delivers high transmittance and a smooth optical surface that reduces unnecessary reflections. The filter’s brass frame is precision-milled and measures only 3.5mm in thickness, allowing it to fit even on super wide-angle lenses with minimal risk of vignetting.

Main features

• Ultraviolet absorption optical glass — The filter glass is designed to absorb ultraviolet light, helping to maintain image clarity while protecting the front element.
• Brass frame with precise milling — The frame is constructed from brass and manufactured using highly accurate brass milling for a reliable fit and consistent thread alignment.
• Exclusive “U” type Nano coating — NiSi’s proprietary “U” type Nano coating is applied to the surface to improve optical performance and durability.
• Hardened waterproof coating — A hardened waterproof layer helps repel water and resist light surface contamination.
• Top-level optical surface machining accuracy — The optical surfaces are machined to a high standard to preserve image quality and ensure consistent performance.
• Ultra-thin design (3.5 mm) — The thin frame reduces the chance of vignetting on wide-angle lenses and allows the filter to sit close to the lens’ front element.
• High transmittance and low reflection — The optical glass delivers very high transmittance (greater than 99.2%) with a highly smooth surface and only 0.3% reflection.
• Protects the lens front element — Use the filter as a general protective filter to keep dust, moisture and potential scratches away from the lens glass.
• Easy to clean — The coatings and waterproof surface make the filter straightforward to wipe and maintain.

Use and benefits

Use this NiSi UV filter as a long-term protective layer on your lens. It helps reduce dust and moisture from reaching the front element and provides a first line of defense if the lens is exposed to drops or abrasive contact. Because of its thin brass frame, the filter fits well on wide-angle optics without introducing significant vignetting.

Technical specifications

Cleaning and care

The hardened waterproof coating and Nano layer simplify cleaning. In normal conditions you can remove dust and light smudges with a lens cloth or blower. Regular gentle cleaning preserves the coatings and maintains the filter’s high transmittance.

FAQ

Question: Is this filter suitable for wide-angle lenses?
Answer: Yes. The ultra-thin 3.5 mm brass frame is designed to minimize vignetting and fit well on many wide-angle lenses.

Question: Can I leave the filter on my lens all the time?
Answer: Yes. The NiSi PRO Nano HUC UV is intended as a general protective filter you can keep on your lens to reduce dust, moisture and the risk of front-element damage.

Question: How does the Nano coating help?
Answer: The exclusive “U” type Nano coating improves surface durability and optical performance, while the hardened waterproof coating helps repel water and makes the filter easier to clean.

Question: What optical benefits does the filter provide besides protection?
Answer: The filter uses high-quality Japanese ultraviolet absorption glass with double-sided multi-coating to ensure very high transmittance (>99.2%) and low surface reflection (0.3%), supporting clearer images with minimal unwanted reflections.