Sigma Intros New Clear Glass Ceramic Protective Lens Filter

Sigma has introduced the unique, new Water Repellent (WR) Ceramic Protector, an innovative lens filter that features new Clear Glass Ceramic material and provides enhanced protective qualities.

This shock and scratch resistant lens protector is crafted from a Clear Glass Ceramic that was developed specifically for Sigma (in partnership with a glass manufacturer). Made with a special heat treatment that evenly precipitates microcrystalline spinel throughout the materials, the Clear Glass Ceramic lens filter is ten times stronger than a conventional protective filter and three times the strength of a chemically strengthened filter.

The lens protector also contains a WR coating that repels water, dust and oil, and allows fingerprints to be easily removed. This enhanced protection helps to preserve the lens and ensure long-term, top-notch image quality.

Key features include:

Scratch Resistant: Sigma’s Clear Glass Ceramic offers a Vickers hardness number of 700HV.

Thinner & Lighter: This new protector is up to 50 percent thinner and is up to 30 percent lighter than previous Sigma filters

High Transmittance: Clear Glass Ceramic offers very high transmittance, making it ideal for use as optical glass

Water & Oil Repellent Coating: The water repellent coating reflects only 0.24 percent of visible light, thereby minimizing flare and ghosting. Its ability to repel both water and oil is also excellent, with water drops bouncing right off, and fingerprints easy to remove.

This filter is offered in the most popular filter thread sizes, and is compatible with all Sigma lenses and other lenses that accept front filter threads that are 67mm-105mm diameters. Compatible lenses in Sigma’s Art line include: 35mm F1.4 DG HSM, 30mm F1.4 DC HSM, 18-35mm F1.8 DC HSM, 24-35mm F2 DG HSM, 24-105mm F4 DG OS HSM, 50mm F1.4 DG HSM, 24mm F1.4 DG HSM, 19mm F2.8 DN, 30mm F2.8 DN and 60mm F2.8 DN. Compatible lenses in the Sports line include the 120-300mm F2.8 DG OS HSM and 150-600mm F5-6.3 DG OS HSM.

Compatible lenses in the Contemporary line include the 17-70mm F2.8-4.0 DC OS HSM, 18-200mm F3.5-6.3 DC OS HSM, 18-300mm F3.5-6.3 DC OS HSM and the 150-600mm F5-6.3 DG OS HSM. As with all of Sigma’s lenses, the filter is checked with Sigma’s own Modulation Transfer Function (MTF) measuring system, “A1,” in the company’s factory in Japan.

More info on Sigma’s Lens Protector here. Pricing has not been announced.

Check out the video below to see how the new ceramic filter works.