Urth 58mm UV, Circular Polarising (CPL), ND2-400 Lens Filter Kit Our Explorer Filter Kit includes a UV, CPL and Variable ND2-400, giving you the minimalist essentials you need to take your outdoor photography to the next level. Our Ultraviolet Filter cuts UV light to sharpen your photos and protect your lens against scratches, water, dirt, and fingerprints. Our CPL Polarising Filter cuts reflected (polarised) light, which increases contrast and boosts colour saturation and vibrancy. Our ND2-400 Variable ND Filter provides 1 to 8.66 f-stops of light reduction, giving you greater creative control in changing light outdoors. Slow your shutter for long exposure and motion blur effects, or open your aperture for depth of field effects. Cinematographers can use it to achieve more cinematic effects too. Light Experiments Unlock depth of field and motion blur effects with our ND2-400. Cut Haze and Cast Capture sharper images and truer colours with our UV. Better Saturation and Contrast Cut reflections for more vibrant landscapes with our CPL. Our premium Japanese AGC optical glass is coated with an 8-layer nano-coating for better sharpness, added protection, and easier cleaning. Our consciously designed ultra-slim rim avoids vignetting and our durable magnalium is guaranteed for life. All our filters are double-threaded for stacking filters or using screw-mount lens caps.