At CES 2013 earlier this year, Hoya showed off a new series of lens filters called the HD2. The main feature of the filter set is its strength: each filter uses hardened glass that can take a serious beating without getting damaged or shattering.
Read more…

Nikon recently put out this short 3-minute video that offers an interesting glimpse into one of the critical steps of lens making: the production of the optical glass. It steps through the various stages of manufacturing, from combining the raw elements through examining the chunks of glass before they’re polished and perfected.
Read more…