Hoya HD3 UV Filter 77mm Re-Certified Protector

The Hoya HD3 UV Protector Filter in 77 mm is engineered to serve as a permanent, always-on shield for high-end lenses without introducing any optical compromise. At its core is optical glass rated 4x harder than traditional filter glass, treated with Hoya's patented 32-layer ultra-hard nano-coating that the company rates at 800% harder than conventional coatings. This combination creates a surface that resists scratches from routine cleaning, accidental contact, and environmental abrasion far better than standard protective filters. Light transmission sits at 99.7%, ensuring that exposure metering, color accuracy, and contrast remain effectively unchanged with the filter mounted.

Designed with modern high-resolution sensors in mind, the HD3 has been re-certified to deliver full sharpness on camera bodies with 100 MP or more, meaning it will not become a limiting factor as photographers upgrade their equipment. The low-profile frame is machined from aircraft-grade aluminum, keeping weight down while maintaining the slim clearance needed to avoid vignetting on ultra-wide-angle lenses. The nano-coating also serves a practical purpose beyond hardness: it repels water droplets, oil, and fingerprints, allowing quick wipe-downs in the field with a microfiber cloth. For photographers who prefer to leave a protective filter on at all times, the HD3 is built to handle that role without the image quality trade-offs that cheaper alternatives can introduce.