The Kenko Zeta EX circular polarizer filter is designed to keep weight to an absolute minimum, and weighs just ten grams (1/3 oz.) This is achieved thanks to the combination of a low-profile, machined frame with retainer ring mount, and a four-layer glass element that's just 0.8mm thick.

Other features of the Kenko Zeta EX circular polarizer are said to include "Nano Glass" technology for stain and scratch resistance, ZR (Zero Reflection) Super Multi Coating, and a high transparency polarizing film said to transmit up to one stop more light than in a standard circular polarizer.

Pricing and availability hadn't been announced at press time.