Hoya 77mm Variable Density Screw-in Filter

Hoya 77mm Variable Density Screw-in Filter

• Rotating filter ring with scale indicating max. through min. settings
• Provides 1.5 - 9 stop exposure reduction, equal to filter factor NDX3 - NDX400
• Enables slow shutter speeds to be used; Ring Material: Aluminum
• Allows greater control over depth of field
• Does not affect colour balance or detail. The precision built in double ring design allows the outer ring rotates to control amount of neutral density effect

This filter makes easy to adjust the brightness of a scene and have more control over the exposure settings of your camera, for both still photography and video use. The filter reduces light transmittance between approximately 1/3 and 1/400th of its original level, by rotating the inner filter ring. This allows a much greater range of shutter speed and aperture values to be set according to the desired effect. For example a long shutter speed can be used to blur water or crowds of people, even in full sunlight. The practical exposure range and light transmittance will vary depending on the situation.