X4 UVWorlds Sharpest Protection Filter. 100% Guaranteed. The X4 UV achieves a higher optical resolution than any other protection filter, and thanks to our state of the art and uniformly applied MRC16 and nanotec nano coating layers, the X4 UV lives up to the demands of the professional outdoor photographer.

And we guarantee each and every X4 CPL to perform with optimal optical clarity and color neutrality for 25 years even in the harshest of conditions

and infrared spectrums

Worlds Sharpest Protection Filter

weather-sealed construction

We took all we learned from the success of the X4 ND and designed an entirely new circular polarizing frame

the most color neutral performance of any circular polarizer available and our all-new traction frame design

which beads water and other elements rather than absorbing and smearing

Analyzed on a Hitachi U-4150

allen key and coin compatible screw

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whereas with a Night Sky filter light pollution is eliminated non-destructively

Ultra-slim