Hoya HD UV Filter Ultra-Hard Nano-Coated Stain-Resistant Optical Glass 

49mm 52mm 55mm 58mm 62mm 67mm 72mm 77mm 82mm

FILTER
KEY FEATURES
HD COATING
16 layer Anli-Reflective Multi-Coating
Water & Oil Repellent, Stain Resistant
HD GLASS (UV, PROTECTOR)
Chemically Enhanced Optical Glass is 4x Stronger
Ultra-Clear High Transparency Optical Glass
HD FRAME
Wide-Angle Lens Compatible Very Thin Frame
Front Thread to Attach Lens Caps and Other Filters
Glass Mounted with High Pressure Press Technology
HD POLARIZING FILM (CIR-PL)
High Transparency & High Durability UV Absorbing Film
25% Greater Light Transmission than Standard Polarizing Film
Eliminates haze.   Absorbs the ultraviolet rays which often makes outdoor photographs hazy and indistinct.

Also serves as a permanent lens protector.

Single-sided 8-layer hardening coating
The use of today's highest single-sided eight-layer lens hardening coating process can significantly reduce glass surface reflection, resulting in an almost perfect 99.35% high transmittance (between 400 and 700nm of the visible spectrum).
· Single-sided eight-layer hardening plating is far more durable than other coatings.  This top-class chemical coating preparation not only has greater durability, but also has the advantages of waterproof, anti-oil, anti-scratch and anti-spot.

Ultra-thin push-resistant frames
· The matte ultra-thin frame with high pressure extrusion resistance is not only robust, but also can meet the increasing use of ultra-wide Angle lenses.