Graduated Neutral Density Camera Filter B+W 4x 6 (702M) MRC Nano, 100x150mm

The B+W 4x6 Graduated Neutral Density (702M) MRC Nano filter is a 100×150 mm graduated ND sheet that reduces light transmission by two stops (transmits 25% of incoming light) along a gradual transition. It is designed for selective exposure control in landscape and high-contrast scenes. The filter is made of optical glass with a multi-resistant coating and Nano surface treatment for improved durability and easier cleaning. The 702M series is supplied in a rotating mount (except 4×6 sheets), similar to a polarizer, and intended for use with compatible holder systems.

Advantages

This graduated filter produces noticeable darkening over the selected area, allowing better balance between bright skies and darker foregrounds thanks to its two-stop attenuation. The MRC Nano coating increases scratch and dirt resistance and makes cleaning easier, while optical glass construction preserves image sharpness and colour neutrality.

Suitable for

• Landscape photography with bright skies and darker foregrounds
• Seascapes and sunsets where horizon and sky need exposure control
• High-contrast scenes requiring selective exposure balancing

When it may not be suitable

This filter creates a strong graduated darkening and therefore may not be appropriate when only subtle exposure adjustments are needed. Because it attenuates light by two stops, careful placement of the horizon is important—the effect is more noticeable if the horizon is near the centre of the frame.

Key specifications

• Type: Graduated Neutral Density (hard graduation)
• Density: 2 stops (transmits approximately 25% of light)
• Size: 100 × 150 mm sheet
• Material: Optical glass
• Coating: Multi-Resistant Coating (MRC) with Nano surface treatment
• Mount: Supplied in rotating mount for 702M series (sheet intended for compatible holder systems)

How to use

Install the 100×150 mm sheet in a compatible filter holder and rotate the mount to align the graduated transition with the horizon or other high-contrast boundary in your composition. Adjust camera exposure for the scene, using the filter to reduce sky brightness by two stops. For the strongest and most natural-looking results, avoid placing the horizon too far from the image centre and refine position while viewing through the viewfinder or live view.

What to consider before purchase

• Check compatibility with your filter holder system and holder size for 100×150 mm sheets
• Decide if a two-stop (strong) graduation suits your typical scenes
• Consider glass construction and MRC Nano coating for durability and cleaning needs

Usage recommendations

Use the filter primarily for landscape and seascape compositions with a clear horizon; rotate and position the graduated edge carefully to avoid unnatural dark bands and combine with exposure bracketing if needed for maximum dynamic range control.