1. Extremely thin, only 3.8mm. No vignetting even with wideangle lenses (f=16mm).
2. German manufactured Schott Plate Glass B270 with multi-layer Anti-Reflective and Protective Coating for high image quality.
3. Finest quality polarizing filter, with nearly 100% polarization.
4. Neutral color transmission for accurate color reproduction and UV reduction.
5. Lightweight, high performance "scientific grade" aluminum filter ring provides high strength, corrosion resistance, stability and critical filter alignment.