The basic AR coating layer is made with SIO2 ................................
Quote:
Originally Posted by
Tallboy
Well yeah I don't think a gnash in a lens should be considered defective, but excessive loss of hydrophobic quality or crazing should be. Maybe we aren't far off from each other's viewpoint!
The basic AR coating layer is made with SIO2, which is glass.
There is nothing that will stick permanently to a layer of glass.
Hydrophobic coating are known to wear off with action of rubbing and wiping.