K&F Concept 49mm UV CPL ND4 Lens Accessory Filter Kit Protector Circular Polarizing Neutral Density for DSLR Cameras + Cleaning Cloth Bag Pouch (Nano K Series)

UV filter: It absorbs ultraviolet rays, which usually make outdoor photos blurry, and can always be installed on the lens to provide better clarity and color balance, also protect your lens from scratches and dust. CPL Circular Polarizer Filter: Uses Polarizing technology to give you total "on location" control of color saturation, make skies bluer, grass greener-even eliminate surface reflections from glass and water-all with picture perfect results. ND4 filters: Neutral Density filters used to reduce the quantity of light that reaches the sensor of the camera. They allow to decrease the shutter speed in order to achieve motion blur (waterfalls, ocean, clouds...) and/or to reduce depth of field in very bright conditions. As they are "neutral", ND filters do not affect color rendition. Metal sealing ring instead of the plastic sealing ring, better tightness, avoids fall or loose. Ultra thin filter frame to help avoid vignetting on wide angle lenses. The filter kit made of Japanese optical glass material, with blue coating, to ensure good light transmittance, to ensure excellent image quality and color reproduction, without distortion.