K&F Half-Frame Neutral Density 0.9 (ND8) 67mm Camera Filter, Glass, Model SB6689

K&F Half-Frame Neutral Density 0.9 (ND8) 67mm Camera Filter is a glass graduated neutral density filter designed to reduce incoming light by three stops across part of the image. The half-frame (graduated) design places the darkened area over the brighter portion of the scene to help balance exposure between sky and foreground, enabling longer shutter speeds or wider apertures without overexposing highlights. This filter fits lenses with a 67mm filter thread and is intended for use in landscape, cityscape and creative photography where controlled exposure and motion blur are desired.

Advantages

The glass construction ensures optical clarity and consistent attenuation across the darkened zone, while the neutral density coating preserves color balance without introducing visible color casts. The half-frame gradient provides a smooth transition between the dark and clear regions for natural-looking exposure blending. Designed for 67mm thread lenses, the filter mounts directly to the front of compatible optics, offering a compact solution for exposure control without the need for a full filter holder system.

Suitable for

• Landscape photography requiring balanced sky and foreground exposure
• Cityscape and architectural shots with bright skies
• Long-exposure images to create motion blur in water, clouds or traffic
• On-location shoots where a compact, screw-on graduated ND is preferred

Key specifications

• Filter type: half-frame (graduated) neutral density
• Density: ND0.9 (reduces light by approximately 3 stops)
• Material: optical glass
• Mount thread size: 67mm
• Effect: smooth dark-to-clear gradient across the frame

How to use

Attach the filter to a lens with a matching 67mm thread by screwing it onto the front of the lens. Compose the scene and rotate or shift the filter in the thread (by turning the filter in the mount) so that the darkened half aligns with the brightest area you want to reduce, typically the sky. Meter the scene or use spot metering on the highlights to determine exposure; the ND8 reduces incoming light by about three stops, allowing longer shutter speeds or wider apertures while protecting highlights. Make fine adjustments to the filter position and camera settings until the exposure balance between bright and dark areas appears natural.

Usage recommendations

Use the filter on moderate wide-angle to telephoto lenses where the graduated edge can be placed over a distinct horizon or transition. For scenes with uneven or complex horizons, consider combining this half-frame filter with exposure bracketing or post-processing blending. Clean the glass with a soft microfiber cloth and a suitable lens cleaner to maintain optical performance.