Breakthrough Photography Unveil the World's First Tempered Glass ND Filters

Tempered glass is a toughened form of glass used in car windows, shower doors, refrigerator trays, and mobile screen protectors--and now Breakthrough Photography are using it to create their new Dark CPL and X4 GND filters. Both filters are made out of a special SCHOTT B270® optical glass that boasts many useful properties. Unlike the […]