#Neutral Density Filter

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A neutral density filter is a filter that is placed in front of the lens to cut light by a specified number of stops, ranging from a fraction of a stop to 10. There are variable neutral density filters that change the amount of light allowed to enter when twisted, similar to how a circular polarizer operates. Uses for neutral density filters include shooting in bright light with a shallow depth of field, shooting video at appropriate shutter speeds for video capture in bright light, and taking long exposures during the day.