DuraShield is a top-surface protective coating whose water/oil repellency and surface resistance help reduce deposits and make cleaning easier.
Protective surface coating for easier cleaning and care
Protecting the lens surface
Durabon's guide describes DuraShield as a protective top coating that increases resistance to scratching, dirt and moisture and makes surface care easier. These specifications concern the lens surface.
Hydrophobic and oleophobic properties
The coating is described as hydrophobic and oleophobic. These properties help reduce adhesion of water, skin oils, fingerprints and dirt, making the lens easier to clean.
This description does not mean complete dirt prevention or no need for cleaning. Greater scratch resistance is not the same as an entirely scratch-proof lens.
Difference from LR
LR means Low Reflection and reduces surface reflections. DuraShield focuses on physical surface protection and care. A low-reflection label alone does not confirm DuraShield; check the available coating combination.
Available durability data
The cited brochure gives no numerical durability rating for DuraShield. No scratch-resistance percentage, hardness rating or guaranteed lifetime is therefore stated.