Neutral Density Variable Filter K&F KF01.1836 ND3–ND1000 72mm

The Neutral Density Variable Filter K&F KF01.1836 ND3–ND1000 72mm is an adjustable screw-in ND filter that lets photographers control the amount of light entering the lens without changing color balance. With a 72mm thread size, it fits lenses that accept 72mm filters and provides continuous attenuation from ND3 to ND1000, enabling longer shutter speeds or wider apertures in bright conditions. The filter is designed for general-purpose use in landscape, portrait and creative photography where exposure control and motion blur effects are required.

Advantages

This K&F variable ND filter offers a wide attenuation range in a single, compact unit, removing the need to carry multiple fixed-density filters. The screw-in 72mm mount ensures a secure fit on compatible lenses and maintains front filter thread access for additional attachments. The filter is engineered to minimize color cast and preserve image sharpness while allowing smooth adjustment between light reduction levels.

Suitable for

• Long-exposure landscape photography (waterfalls, clouds, seascapes)
• Creating motion blur for moving subjects (traffic, waterfalls)
• Using wider apertures in bright light for shallow depth of field
• Video shooting requiring controlled exposure in changing light

Key specifications

• Filter type: Variable neutral density
• Attenuation range: Adjustable from ND3 to ND1000
• Thread size: 72 mm screw-in
• Optical effect: Continuous light reduction without altering color balance
• Typical uses: Exposure reduction, motion blur, long exposures, aperture control

How to use

Screw the filter onto the lens front thread (72mm). Rotate the outer ring to change the density and watch the viewfinder or live view to set the desired exposure. When using longer exposures, stabilize the camera on a tripod and use remote release or timer to avoid camera shake. For video, adjust slowly to avoid visible steps in exposure. Check for any vignetting at wide focal lengths and reduce the density or remove the filter if necessary.

Usage recommendations

When adjusting the filter, monitor live view or use an external light meter to ensure accurate exposure. To minimize potential cross-polarization or X-pattern artifacts at extreme densities, avoid using the highest attenuation settings with wide-angle lenses or combine with a single fixed ND when precise results are required.