EzFoto Auto Lens Cap / Lens Hood for Fuji Finepix X100 The Auto Lens Cap/ Hood has function of shading the end of the lens, increases the contrast and color of picture. It also protects the X100 lens from dust and scratches, also avoiding losing of caps. To use, please remove the silver ring on the X100 lens, and then screw-in the Auto Lens Cap / Hood to the lens. And then slide the OPEN button on the lens cap to the right, 3 pieces of caps will release automatically with designed angle and works as lens hood. Press the 3 pieces from the back to close the Lens Cap.