49mm 3PC Filter Kit CPL UV FLD for Sony 30mm f/3.5 Macro Lens

Clear Filter (UV) - A UV Filter protects your camera's lens from scratches, dust, dirt, moisture and fingerprints, while reducing unwanted ultra-violet light. Leave it on your lens at all times Polarizer Filter (PL) - Polarizer's let you achieve vibrant color saturation, reduce or eliminate glare and reflections from non-metallic objects and glass surfaces, and minimize haze; rotate to desired effect./li> FLD filter helps balance light in outdoor situations or where fluorescent lights are used