WR CERAMIC PROTECTOR PTC-21

Featuring "Clear Glass Ceramics," a high-strength material also used in aerospace and other advanced industries. Combining hardness superior to conventional chemically strengthened glass with flexibility greater than sapphire crystal, this flagship protector possesses the ideal properties for lens protection.

Through a specialized heat treatment that uniformly strengthens the entire material, it achieves a hardness far exceeding that of conventional chemically strengthened glass, while offering greater flexibility than sapphire crystal.

The material's robust structure not only minimizes scratches on the front of the lens but also reduces the risk of glass fragments scattering in the unlikely event of damage.

The WR coating, which combines superior water repellency and oil resistance with antistatic properties, repels water droplets, fingerprints, and fine dust. Any smudges can be easily wiped away, providing essential support for shooting in harsh environments.

Internal reflections are suppressed through a redesigned frame surface treatment, minimizing any impact on image quality. Furthermore, an optimized design has allowed for a thinner profile in the large-diameter 95mm and 105mm sizes.

Compatibility with all Sigma lenses has been fully verified, allowing for shooting without the worry of vignetting, even when using ultra-wide-angle lenses. Despite the slim design, it ensures secure lens cap attachment for peace of mind.

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