Launch schedule of
Sigma's filter series for interchangeable lenses

Kanagawa, Japan - Sigma Corporation (Headquarters: Kawasaki-shi, Kanagawa; CEO: Kazuto Yamaki) 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 September 30, 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: September 30th, 2026

Product appearance and specifications are subject to change without notice.
The image shown is the Sigma WR Ceramic Protector PTC-21.

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.

Product Lineup

WR Ceramic Protector PTC-21
　67mm / 72mm / 77mm / 82mm / 95mm / 105mm

Other 3 Models (WR Protector + UV PUV-21, Protector LPT-21, WR Circular PL Filter CPL-21)
　52mm / 55mm / 58mm / 62mm / 67mm / 72mm / 77mm
　82mm / 95mm / 105mm

CONTACT

For further information, please contact your local authorized Sigma Service Station listed at the link below:
https://www.sigma-global.com/en/world-network/

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