The Giottos AEGIS Multi-Coated Screen Protector for Canon EOS 5D Mark III and 1D X DSLR Cameras is made with ultra-high quality Schott German glass to preserve the optical properties of the LCD's display. The Schott glass protection is only 0.5mm thick and adds no significant weight or bulk to the camera body. Most importantly, the glass layer protects the screen from impact, chemical damage and scratches which can mar an LCD viewing screen. It affixes to an LCD screen with a very thin layer of TESA 4972 filmic double-sided tape which prevents air bubbles from forming under the glass. An added bonus is that the screen is removable and replaceable if it gets scratched or damaged. It also feature multi-coatings that lower reflections, withstand UV light and enhance the overall image display. Both sides of the glass are coated with 12 layers of anti-reflective (AR) coating that provide an outstanding 98% transmission of light in the 420-680nm range.