KF X-Fader 37mm Variable ND Filter ND2-ND400 Grey

The KF X-Fader 37mm Variable Neutral Density Filter offers precise light control from ND2 to ND400 (1 to 8.6 stops), enabling creative long exposure and shallow depth of field effects in bright conditions. Crafted with Japanese AGC optical glass and a 28-layer multi-coating, it ensures sharp, color-neutral images while resisting water, oil, and scratches.

Advantages

Variable ND design eliminates the need for multiple fixed ND filters. Ultra-slim 7.4mm frame prevents vignetting on wide-angle lenses. Smooth rotation mechanism with hard stops for consistent adjustments. Double-threaded construction allows stacking additional filters.

Suitable for

• Landscape photography with silky water or cloud motion
• Video recording requiring controlled shutter speed
• Portrait photography with wide apertures in bright light
• Any 37mm filter thread lens

Key specifications

• Filter Type: Variable Neutral Density (VND)
• Filter Diameter: 37mm
• ND Range: ND2 to ND400 (1 to 8.6 stops)
• Optical Density: 0.3 to 2.7
• Light Transmittance: 50% to 0.25%
• Optical Material: Japanese AGC Optical Glass
• Frame Material: Aviation Aluminum Alloy
• Coatings: 28-Layer Multi-Coated, Waterproof, Scratch-resistant, Oil-resistant, Anti-reflection
• Filter Thickness: 7.4mm
• Thread Type: Double-threaded (stackable)
• Rotation: Smooth with hard stops
• Color Shift: Minimal
• X-Pattern: Minimized at maximum density

Recommendations

For best results, avoid using at the maximum ND setting to reduce potential X-pattern artifacts. Combine with a lens hood to minimize flare. Store in the provided case when not in use.