Graduated Neutral Density Camera Filter B+W 4 x 6 GRAD ND MRC NANO (701M) — grey/white, MRC coating, 1 pc

B+W 4 x 6 GRAD ND MRC NANO (701M) is a 4 x 6 graduated neutral density filter that provides a smooth grey-to-clear transition to balance exposure between brighter and darker areas of the frame. The neutral grey half transmits 50% of incoming light, reducing that portion by one f-stop without shifting color balance. Manufactured from optical glass with Multi Resistant Coating (MRC) plus an additional nano layer, the filter reduces reflections and is easier to clean. Supplied as a single piece, it is designed for use with compatible 4 x 6 filter holders and is suitable for landscape, architectural and long-exposure photography when preserving tonal detail and color neutrality is required.

Advantages

The graduated neutral density design allows selective darkening of bright areas such as skies to retain cloud detail and prevent overexposure while keeping foreground exposure intact. The 50% transmission of the grey portion corresponds to a one-stop reduction, making exposure adjustments predictable and repeatable. The MRC Nano coating reduces ghosting and flare, simplifies cleaning, and helps maintain contrast and color fidelity. The 4 x 6 format is compatible with common holder systems used in professional and enthusiast workflows.

Suitable for

• Landscape photography to balance sky and foreground exposure
• Architectural exteriors where bright backgrounds need control
• Long-exposure scenes that require controlled highlights
• Situations demanding neutral color rendering across transitions

Key specifications

• Type: Graduated neutral density (ND) filter with grey-to-clear transition
• Format: 4 x 6 inches (suitable for compatible filter holders)
• Density: Half (grey) transmits 50% of light — approximately 1 stop reduction
• Coating: Multi Resistant Coating (MRC) with nano layer for reduced reflections and easier cleaning
• Color rendering: Neutral grey to preserve color fidelity
• Supply: Single piece (1 pc)

How to use

Mount the filter in a compatible 4 x 6 filter holder and position the graduated edge to align with the area of the scene you want to darken (for example, the horizon line for sky darkening). Compose and focus with the filter in place if your holder and camera permit, then meter or use your camera’s histogram to set exposure, accounting for the approximate one-stop reduction in the grey area. Adjust the filter vertically and rotate the holder if needed to fine-tune the transition line relative to the subject. For long exposures, ensure the holder and filter are secure to avoid light leaks or movement during the exposure.

Usage recommendations

Use the B+W 4 x 6 GRAD ND MRC NANO when the sky or other bright regions require subtle darkening without color cast. For scenes with an uneven horizon or sloping elements, try slight vertical adjustments or combine with other neutral density filters if additional light reduction is needed. Store the filter in its protective sleeve when not in use and clean according to manufacturer instructions to preserve the MRC Nano coating performance.