NiSi Nano IR Soft GND4 (0.6) - 2 Stop Graduated Neutral Density Lens Filter with Smooth Transition for 100mm Holder HD Optical Glass, Waterproof Coating,

COMPATIBILITY - The 100x150mm GND is made to fit a square filter holder for 100mm wide 2mm thick filters. Easily slides into place, adjust the graduation to your horizon and start shooting. SOFT GND: Obscures specific areas of an image, with unaffected exposure in the rest. It is denser at one edge and tapers to clear in the middle, with a smooth edged transition line between them. GND4: The dark end of the filter has a density of 0.6, which can lengthen the shutter speed for exposure by reducing the amount of light entering the camera by 2 stops. True to Life Color - This filter is constructed of high-definition optical glass and treated with infrared (IR) light protection. This provides the sharpest images without changing color. NANO COATING: Our nano coating makes this filter waterproof, scratch-resistant and anti-reflective for long-lasting performance. Retract dust, dirt and fingerprints, making it easy to clean.