Ronkonkoma, NY, September 8, 2026 – Sigma Corporation of America, the US subsidiary of Sigma Corporation (CEO: Kazuto Yamaki. Headquarters: Asao-ku, Kawasaki-shi, Kanagawa, Japan), is pleased to announce the renewal of Sigma’s filter series for interchangeable lenses. The entire lineup has been completely redesigned to achieve further performance improvements. Additionally, the design and packaging have been updated to align with Sigma’s new visual identity, introduced in 2025.
Four filter models will be released on November 5, 2026: the Sigma WR Ceramic Protector PTC-21, a ceramic protector offering exceptional impact resistance; the Sigma WR Protector + UV PUV-21, featuring UV protection and water- and oil-repellent coating; the standard Sigma Protector LPT-21; and the Sigma WR Circular PL Filter CPL-21, a circular polarizing filter with water- and oil-repellent coating.
Product Name:
- Sigma WR Ceramic Protector PTC-21
- Sigma WR Protector + UV PUV-21
- Sigma Protector LPT-21
- Sigma WR Circular PL Filter CPL-21
Launch: November 5, 2026
* Product appearance and specifications are subject to change without notice.
KEY FEATURES
Completely redesigned construction
As part of this renewal, the entire lineup has been redesigned from the ground up to further minimize impact on image quality while enhancing overall usability. Improvements to the surface treatment of the filter frames reduce internal reflections compared to previous models, while an optimized design has enabled a slimmer profile for the large-diameter 95mm and 105mm sizes.
New exterior design and packaging
These filters feature an exterior design and packaging aligned with Sigma’s new visual identity, introduced in 2025.
Verified compatibility with all Sigma lenses
Compatibility with all Sigma lenses has been fully verified, allowing for worry-free shooting without vignetting, even when using ultra-wide-angle lenses. Despite the slim design, these filters ensure secure lens cap attachment, providing users with peace of mind.
CONTACT
US inquiries contact:
Michael Dioguardi: [email protected]
Lisa Baxt: [email protected]
INFORMATION
Sigma America: https://www.sigmaphoto.com/
Sigma Corporation: https://www.sigma-global.com/
Product Information:
Sigma WR Ceramic Protector PTC-21
https://www.sigma-global.com/en/accessories/ptc-21
Sigma WR Protector + UV PUV-21
https://www.sigma-global.com/en/accessories/puv-21
Sigma Protector LPT-21
https://www.sigma-global.com/en/accessories/lpt-21
Sigma WR Circular PL Filter CPL-21
https://www.sigma-global.com/en/accessories/cpl-21
