This is the "Kenko Zeta" series, a new-generation of high-end filters developed for high-grade lens of digital cameras. Thanks to the new and exclusively developed Anti-Reflective ZR coating, the reflection ratio occurring on the glass surface is 0.3% or less in the visible light range (0.6% or less with WIDEBAND C-PL), and Kenko Zeta filters have all but nullified the problems that occur with image quality, whatever they are. The filter frame is exclusively designed using the latest design technology. They can also be used with assurance on wide-angles lens.