http://www.dpreview.com/articles/0589968182/novo-to-produce-filter-range-using-sapphire-crystal-and-gorilla-glass

Sapphire UV The World’s slimmest frame,

just 2.38mm. Superior brass frame with laser engraved text.

Sapphire Crystal Glass, incomparable strength and clarity.

99.9% transmittance and 99.95% UV block. Water & oil repellent, scratch & stain resistant.

22 layers UV cut & 6 layers broadband coatings.

2 AF waterproof coatings.

Endura UV & Protector The World’s slimmest frame, just 2.38mm.

Superior brass frame with laser engraved text.

Gorilla Glass 3TM 99.9% transmittance and 99.9% UV block.

Water & oil repellent, scratch & stain resistant.

22 layers UV cut &6 layers broadband coatings.

2 AF waterproof coatings.

Endura Circular PL The World’s slimmest frame, just 3.5mm.

Superior brass frame with laser engraved text. Japanese AGC Glass.

99.5% transmittance. Water & oil repellent, scratch & stain resistant.

22 Layers UV cut & 6 layers broadband coatings. 2 AF waterproof layers.

Endura Vari ND The World’s slimmest frame, just 6mm.

High grade aluminium frame with laser engraved text.

Japanese AGC Glass Water & oil repellent, scratch & stain resistant.

2 AF waterproof coatings.

사파이어 크리스탈 글래스는 모스 경도 9(참고로 다이아몬드는 10)이며 투과율이 99.9%.자외선 차단율이 99.95%인 최고급 소재라고 합니다.

스크래치에 아주 강합니다. 40mm~82mm 사이즈로 나온다고 합니다.

https://www.youtube.com/watch?v=kVQbu_BsZ9o