How polarisation filters work\nThe polarization filter is still one of the most frequently used filters in photography. This filtering reduces reflections on glass and the surface of water or puddles. At the same time, they increase colour saturation and enhance contrast. Objects behind glass (display cabinets, windscreens) become visible once more.\n\nUse of the walimex pro DJI Phantom 4 Pro CPL filter\nThe polarization filter is the only filter whose effect cannot be achieved afterwards using image editing software. Reflections must be removed at the time the image is taken; after that, it's no longer possible. The CPL filters out reflections, increases colour saturation and enhances contrast.\n\nUsing the walimex pro DJI Phantom 4 Pro grey / ND filter\nGrey filters, also referred to as ND filters (neutral density filters), reduce the entire visible light spectrum evenly throughout the entire filter. Colours and contrast are not affected by this.\n\nFilter factor for grey / ND filters\n- Filter factor 4 increases the exposure time / aperture size by 2 stops\n- Filter factor 8 increases the exposure time / aperture size by 3 stops\n- Filter factor 16 increases the exposure time / aperture size by 4 stops.\n\n- Drone filter for the DJI Phantom 4 Pro\n- Filter set comprises CPL, ND4, ND8, ND16\n- Reduces light evenly in the image without altering the colours\n- Take photographs or shoot video with a wide aperture\n- Ideal for landscape and architectural photography