Red Diamond 100 x 150 Hard Reverse-Grad ND Filter (2 to 0.5-Stop)

• Compatible with M10 or M10 Pro Filter Holder
• Effectively darkens bright skies, specifically during a sunrise or sunset, while allowing for a normal, unaffected exposure in the other regions of the image
• Band of density extends approximately 15mm in both vertical directions
• Density pattern corresponds to the brightness pattern of the sun when it appears at or is closer to the horizon as opposed to a higher angle, which creates an increase in brightness that is more prominent on both sides of the sun than above it
• Hard-edged line of transition between the band of density and the clear area below it is useful for hard transitions between the sky and land
• Filter does not affect the overall coloration of the image
• Shock-resistant optical glass construction
• 10 layers of anti-reflective nano coatings on each glass surface prevent internal ghosting and reflections, while further enhancing clarity and color fidelity
• 10 additional scratch-resistant hydrophobic coatings on each glass surface further protect the filter substrate and result in an improved beading effect when in contact with water or oil for greater cleaning efficiency
• Rounded edges for easier placement within a compatible filter holder slot
• When combined with a compatible filter holder, included gasket helps to prevent light from coming in between the filter and the lens behind it, which can have an unwanted effect on exposure
• Metallic filter case for storage and transport

Red Diamond 100 x 150 Hard Reverse-Grad ND Filter (2 to 0.5-Stop)

This filter achieves its effect with a 0.6 band of density across its center region that provides a 2-stop reduction in light from entering a lens. This band extends approximately 15mm in both vertical directions. With a soft-edged line of transition, it tapers to a 0.15 density that provides a 0.5-stop reduction in light at the edge above it. Directly below the 0.6 band of density, it tapers to clear, with a hard-edged line of transition before the clear area.

The placement of a 0.6 band of density that tapers to a density of 0.15 above it with a clear area directly below, allows the 100 x 150mm Red Diamond Hard-Edge Reverse-Graduated Neutral Density 0.6 to 0.15 Filter to match the positioning of the sun when it is at, or immediately above, the horizon. In such instances, the sun can appear closer to the center of an image as opposed to the upper edge, and an increase in brightness is created that is more prominent on both sides of the sun than above it. This pattern of brightness corresponds to the density pattern on the 100 x 150mm Red Diamond Hard-Edge Reverse-Graduated Neutral Density 0.6 to 0.15 Filter. The hard-edged line of transition in this reverse graduated neutral density filter is useful for hard transitions between the sky and land, while the 2-stop to 0.5-stop gradation with a soft-edged line of transition is applicable to multiple regions of brightness within the sky.

Red Diamond 100 x 150 Hard Reverse-Grad ND Filter (3 to 1-Stop)

This filter achieves its effect with a 0.9 band of density across its center region that provides a 3-stop reduction in light from entering a lens. This band extends approximately 15mm in both vertical directions. With a soft-edged line of transition, it tapers to a 0.3 density that provides a 1-stop reduction in light at the edge above it. Directly below the 0.9 band of density, it tapers to clear, with a hard-edged line of transition before the clear area.

The placement of a 0.9 band of density that tapers to a density of 0.3 above it with a clear area directly below, allows the 100 x 150mm Red Diamond Hard-Edge Reverse-Graduated Neutral Density 0.9 to 0.3 Filter to match the positioning of the sun when it is at, or immediately above, the horizon. In such instances, the sun can appear closer to the center of an image as opposed to the upper edge, and an increase in brightness is created that is more prominent on both sides of the sun than above it. This pattern of brightness corresponds to the density pattern on the 100 x 150mm Red Diamond Hard-Edge Reverse-Graduated Neutral Density 0.9 to 0.3 Filter. The hard-edged line of transition in this reverse graduated neutral density filter is useful for hard transitions between the sky and land, while the 3-stop to 1-stop gradation with a soft-edged line of transition is applicable to multiple regions of brightness within the sky.

Red Diamond 100 x 150 Hard Reverse-Grad ND Filter (4 to 1.5-Stop)

This filter achieves its effect with a 1.2 band of density across its center region that provides a 4-stop reduction in light from entering a lens. This band extends approximately 15mm in both vertical directions. With a soft-edged line of transition, it tapers to a 0.45 density that provides a 1.5-stop reduction in light at the edge above it. Directly below the 1.2 band of density, it tapers to clear, with a hard-edged line of transition before the clear area.

The placement of a 1.2 band of density that tapers to a density of 0.45 above it with a clear area directly below, allows the 100 x 150mm Red Diamond Hard-Edge Reverse-Graduated Neutral Density 1.2 to 0.45 Filter to match the positioning of the sun when it is at, or immediately above, the horizon. In such instances, the sun can appear closer to the center of an image as opposed to the upper edge, and an increase in brightness is created that is more prominent on both sides of the sun than above it. This pattern of brightness corresponds to the density pattern on the 100 x 150mm Red Diamond Hard-Edge Reverse-Graduated Neutral Density 1.2 to 0.45 Filter. The hard-edged line of transition in this reverse graduated neutral density filter is useful for hard transitions between the sky and land, while the 4-stop to 1.5-stop gradation with a soft-edged line of transition is applicable to multiple regions of brightness within the sky.