Neutral Density (ND) Adjustable Filter K&F 77mm ND2–ND32 True Color MRC Nano X

The Neutral Density (ND) Adjustable Filter K&F 77mm ND2–ND32 True Color MRC Nano X is a variable ND filter designed for 77 mm lens threads. It provides continuous light reduction from approximately 1 stop (ND2) up to 5 stops (ND32), allowing precise control of exposure in bright environments. The filter preserves natural color balance using True Color technology and includes a multi-resistant coating (MRC) with Nano X surface treatment to reduce reflections, resist scratches and simplify cleaning. Constructed for straightforward attachment to compatible lenses, this filter supports long exposures, motion blur effects and wider aperture shooting in daylight.

Advantages

The adjustable ND design replaces a set of fixed-density filters by offering a smooth range of attenuation in a single accessory, which reduces weight and simplifies kit organization. True Color rendering maintains accurate color reproduction without noticeable color cast, and the MRC Nano X treatment improves contrast by reducing stray reflections on the glass surfaces. The filter’s metal frame is machined to fit standard 77 mm threads and allows easy rotation to set the desired density while maintaining reliable optical alignment.

Suitable for

• Long-exposure landscape photography to smooth water and cloud movement
• Portrait and street shooting when using wide apertures in bright light
• Creating motion blur in waterfalls, rivers, or moving vehicles
• Video work that requires consistent exposure control and neutral color

Key specifications

• Filter type: Variable neutral density (adjustable ND)
• Density range: ND2 to ND32 (approx. 1–5 stops of light reduction)
• Glass treatment: True Color optical coating
• Surface finish: Multi-Resistant Coating (MRC) with Nano X treatment
• Frame: Metal mount compatible with 77 mm lens threads

How to use

Attach the filter to a lens with a 77 mm front thread by screwing the mount clockwise until secure. Rotate the outer ring to vary the neutral density level; observe the viewfinder or live view to set exposure and composition. When using long exposures, stabilize the camera on a tripod and use mirror lock-up or electronic shutter options if available to reduce vibration. For video, adjust density gradually to maintain consistent exposure during scene changes.

Usage recommendations

Set the filter to a low density and check for any vignetting, especially on wide-angle lenses. Avoid extreme density settings that may cause uneven polarization or cross-patterns with certain lens coatings. Clean the glass with a microfiber cloth and appropriate lens cleaner to preserve the MRC Nano X surface. Store the filter in its protective case when not in use.