K&F Half-Strength Neutral Density Filter ND8 49mm Gray Glass

The K&F Half-Strength Neutral Density Filter ND8 49mm Gray Glass reduces incoming light by three stops, enabling longer exposures or wider apertures in bright conditions. Designed for lenses with a 49mm filter thread, the ND8 glass maintains color neutrality while cutting light intensity, allowing greater control over shutter speed and depth of field without altering color balance. The slim profile minimizes vignetting on wide-angle lenses.

Advantages

This ND8 filter provides a consistent three-stop light reduction across the visible spectrum while preserving color fidelity and image sharpness. Its gray optical glass construction offers reliable density and even exposure across the frame. The 49mm threaded mount ensures secure attachment to compatible lenses and easy stacking with other 49mm accessories. The low-profile design reduces the risk of vignetting on wide-angle setups and supports precise creative control for long-exposure and motion-blur techniques.

Suitable for

• Landscape photography to smooth water and cloud motion with longer exposures
• Long-exposure urban and night scenes where reduced light allows extended shutter times
• Motion-blur effects for waterfalls, rivers, or moving crowds
• Using wider apertures in bright light to achieve shallow depth of field
• Stacking with polarizers or additional filters on lenses with 49mm threads

Key specifications

• Filter type: Neutral Density (ND)
• Density: 3 stops light reduction (ND8)
• Material: gray optical glass
• Thread size: 49mm
• Profile: slim/low-profile frame to reduce vignetting

How to use

Screw the ND8 filter onto the front of any lens with a 49mm filter thread until it is secure but not over-tightened. Compose and focus your scene before applying very long exposures, as heavy filters can make through-the-lens viewing darker; use live view or manual focus as needed. Meter or bracket exposures to determine the correct shutter speed when using the three-stop reduction; consider using a tripod for stability at slow shutter speeds. When stacking filters, monitor for vignetting on wide-angle lenses and tighten threads evenly.

Usage recommendations

Use the ND8 filter for daytime long exposures, such as smoothing water and clouds or reducing depth of field in bright light. Combine with a tripod and remote release for sharp results at slow shutter speeds. Clean the glass with a lens-safe cloth to maintain image quality and store in a protective case when not in use.