JW 49mm Multi-coated UV Filter For Sony SEL50F18 SEL55210 SEL28F20 SEL55F18Z SEL16F28 SEL35F18 SEL24F18Z SEL1855 SAL50F18 SAL28F28+JW Cleaning Cloth The anti-reflective coating helps to reduce reflections on the filter surface. JJC ultra-thin F-MCUV is made of high-quality optical glass, and light transmission is up to approximately 98%, providing you with additional contrast and high color fidelity. The filter absorbs UV light, which often makes outdoor photographs hazy and indistinct. Made of aviation aluminum material, the uttra thin filter frame has a matte finish on the surface. It is complied with the ROHS standard that is limited by European Union. The front of the frame is designed with thread for attaching lens cap or other accessories. Multi-coating helps to reduce flare, ghosting, and reflections on the filter surface for higher light transmission and resulting in greater contrast and color fidelity.