Clear Ceramic Makes This Filter 10x Tougher Than Your Usual Lens Protector

This protective lens of the eye filter might look like any other , but it ’s got an inconspicuous enigma . Making use of a newfangled kind of well-defined ceramic , it ’s ten times tougher than most formal protective filters , and therefore able to keep your lens of the eye perfectly good .

Developed by Sigma , the clear glass ceramic is made using a especial heat handling technique which create a skillful , even microstructure . That means some impressive material properties . It ’s ten time problematical than normal filter ice — with a Vickers hardness number of 700HV , for material science nerds — and even three sentence firm than a chemically indurate drinking glass filter .

It ’s also got many of the other features you ’d look for in a protective filter : it has gamy short transmittance ( good ) and boast a coating that helps it repulse water , dust , and oil . It ’s uncommitted in most democratic yarn sizes , but is guarantee to fit any Sigma lens . Did we mention the ten times tougher thing ? That ’s awesome .

Starship Test 9