The Tiffen 4 x 5.65" Soft Edge Graduated 0.9 ND Filter (Horizontal Orientation) is a special filter that helps make certain parts of the photo darker, like the sky, while keeping other areas unchanged. It's like sunglasses for your camera. The filter is darkest at the edge and gets lighter towards the middle, with a smooth transition between the dark and clear parts. This doesn't change the colors in the photo, and the 0.9 level means it makes the light 3 times less bright.

Tiffen makes these filters using ColorCore technology. They put two pieces of glass together very carefully, making them super flat and only 1/10,000th of an inch apart. This filter is about 4 x 5.65" big, which is around 101.6 x 143.5mm.

Note: A horizontal orientation filter's line of transition runs parallel to the long side of the filter.

• Soft-edged 0.9 ND graduated filter for darkening skies and other bright areas of the image.
• Provides a 3 stop reduction in light in selective areas.
• Neutral density filters do not affect the overall coloration of the image.