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Neutral-density filter

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How to use ND filter on portrait photography

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Neutral Density Filters EXPLAINED for Beginners

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Enhancing Outdoor Portraits with ND Filters

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How to Use a 10 Stop Neutral Density Filter for Long Exposure Photography

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10 Stop ND Filters Compared - $10 to $360

In photography and optics, a neutral-density filter, or ND filter, is a filter that reduces or modifies the intensity of all wavelengths, or colors, of light equally, giving no changes in hue of color rendition. It can be a colorless (clear) or grey filter. The purpose of a standard photographic neutral-density filter is to reduce the amount of light entering the lens. Doing so allows the photographer to select combinations of aperture, exposure time and sensor sensitivity that would otherwise produce overexposed pictures. This is done to achieve effects such as a shallower depth of field or motion blur of a subject in a wider range of situations and atmospheric conditions.
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