The ProMaster Basis Variable Neutral Density (VND) filter effectively diminishes the light entering your lens by 2 to 8 stops, facilitating precise exposure control. The primary function of a neutral density (ND) filter is to reduce light for exposure management. A variable ND filter (VND) serves as a versatile alternative to multiple ND filters, enabling users to adjust the light reduction simply by rotating its ring. The ProMaster Basis VND filter can decrease light by a minimum of 2 f-stops and a maximum of 8, with the flexibility to set it to any value within this range.

There are compelling reasons to limit light in both still photography and videography. Some examples include:

• In still photography, a VND filter permits the use of a slower shutter speed, which can create a motion blur effect with moving subjects. An example of this is the blurring of water to convey a sense of movement.
• In videography, the cameras shutter speed (frame rate) is typically fixed, necessitating the use of the lens aperture for exposure control. However, if a wide aperture is required to achieve a shallow depth of field in bright lighting conditions, a VND filter can be employed to reduce light, thus allowing for appropriate exposure even with a large aperture setting.

All ProMaster Basis filters feature identical filter thread sizes on both the front and back, ensuring compatibility with your lens cap and the ability to stack with other filters of the same size. Basis filters offer exceptional value, combining optical excellence with affordability to deliver outstanding results.