<p><span style="font-weight: bold;">ND-PL Filter</span></p><p>In the field of drones and aerial photography, drone lenses have limitations on the sensitivity and weight. PGYTECH has created a fusion of ND and PL filter, weighting only 1.5 g providing the photographer with prolonged exposure time and eliminating polarized light. This filter combines the best of two worlds, and is a powerful tool for aerial photography and content creators.</p><p><br></p><p><span style="font-weight: bold;">SCHOTT Optical Glass</span></p><p>Uses German SCHOTT glass as its base material utilizing multiple grinding and polishing processes.</p><p><br></p><p><span style="font-weight: bold;">Multilayer Coating</span></p><p>Nanometer-scale, double-sided, multi-layer vacuum coating process ensures a first-class waterproof, oil-proof, dust-proof, and anti-scratch protector.</p><p><br></p><p><span style="font-weight: bold;">Light-reduction Coating</span></p><p>Light-reduction coating saves ND filter from discoloration.</p><p><span style="font-weight: bold;"><br></span></p><p><span style="font-weight: bold;">Fast Attachment</span></p><p>Directly attach the filter to ensure its anti-water and anti-dust capacity, which can be damaged by replacing the original filter.</p><p><br></p><p><span style="font-weight: bold;">GLASS German Schott Optical Glass</span></p><p>In order to meet the rigorous requirements of professional photographers, PGYTECH OSMO ACTION Filter (PRO) glass is made from the finest Schott (German) glass.</p><p><br></p><p><span style="font-weight: bold;">Optical Glass Neutral Density Coating Reduces Color Deviation</span></p><p>Uses German SCHOTT glass as its base material. Multiple grinding and polishing processes and IAD multi-layer coating technology to ensure the highest requirements of the high-definition image quality.</p><p><br></p><p><span style="font-weight: bold;">Aeronautic Aluminum+ Knurling Pattern</span></p><p>Made of aeronautic aluminum,the frame features a knurling pattern to ensure quick attachment.</p><p><br></p><p><span style="font-weight: bold;">Protection of Original Filter</span></p><p>The inside part of the frame is covered with silica gel to protect the original filter from being scratched during attachment.</p><p><br></p><h4><span style="font-weight: bold;">PGYTECH Gradient Filter Kit Features</span></h4><p><br></p><p><ul><li>No coating waterproof &amp; oilproof</li><li>Multilayer coating waterproof &amp; oilproof</li><li>Multilayer hardened waterproof coating waterproof &amp; oilproof</li><li>Hardened super waterproof,oilproof coating</li><li>Permeable membrane</li><li>Neutral density coating</li><li>Schott optical glass</li><li>Anti-reflection coating</li><li>Neutral density filter diagram</li></ul></p>