Hoya HD3 lens filters claim to be 4x stronger than optical glass
Kenko Tokina USA recently announced the Hoya HD3 series UV and Circular Polarizer lens filters. According to the company, the new filters feature an anti-reflective coating that is substantially harder than the coatings on previous Hoya lens filters. In fact, the filters are 4 times stronger than optical glass, and offer a 99.7 percent light transmission rate.
Kenko Tokina has developed a new nano-coating formula and a new process used to apply the anti-reflective coating layers to the glass. As a result, the UV filter’s coating is 800% harder than the previous generation, while the Circular Polarizer filter’s coating is 200% harder. Both HD3 filters are available in sizes ranging from 37mm to 82mm.
The HD3 UV filter in particular sports a new 32-layer system that reduces or, in some cases, eliminates reflections from the glass surface. As a result, there is little effect on the image’s contrast, clarity, and color balance. This filter also features an anti-static top layer that is water-repellent, resistant to both scratches and stains, and is said to be easily cleanable.
The Hoya HD3 filters are available in the U.S. now through select retailers ranging in price from $55.90 to $223.90.