99.38% high transmission is out of super slim 1.1mm glass.
Ultra slim 5mm frame design is to AVOID vignetting even use with wide angle lens.
Ultra light aluminum frame ease your burden when carry it.
Both-sided multiple coating reduces reflectivity and made the glass easy to clean with anti-smudge(water contact angle more than 110), antistatic and scratch resistant coatings.
Chemistry-strengthened glass can withstand golf ball 4ft. height free fall impact, trusty protection.
Black-rimmed glass and matte black anodized frame design eliminates flare.
Teflon-coated knurled thread is easy to install or remove from your lens, and it is available for lens cap and hood.