K&F CONCEPT Multi-Coated ND8 ND64 ND1000 with CPL Square FilterDescription * Original Design-Super-Diameter & Ultra-Slim K&F Concept Pro Square Filter System won the iF DESIGN AWARD and Red Dot Design Award. The filter holder can hold both CPL and nd1000 filters. Holder thickness 12mm, 91mm large clear aperture. Effectively reduce the chance of vignetting when using an ultra-wide-angle lens. ultra-slim frame and large diameter ensure no vignetting on a wide-angle lens, rear CPL design for convenient install and removal. Photography Gear for Valentine's Day Shoot. * ND Filters Function ND filter to expend the exposure time to achieve to slow shutter to be used to record movement in subjects such as waterfalls, providing a silky smooth effect to flowing water. The filter frame avoids filter for accidental fall damage(1.5m). * CPL Filters Function Allow you to remove reflections from non-metallic surfaces, such as water and glass, also in color and contrast enhancement, especially for the blue sky and white clouds.