FotodioX Pro Hard-Edge Reverse Graduated ND Filter (6.6 x 8.6", 3 to 2-Stop)

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This 3 to 2-stop, 7.9 x 10.2" FotodioX Pro Hard-Edge Reverse Graduated ND Filter is designed for use with the WonderPana 66 and FreeArc filter holder systems. This filter can be applied to darken bright skies, specifically during a sunrise or sunset, while allowing for a normal, unaffected exposure in the other regions of the image. This filter achieves its effect with a band across its center region that provides a 3-stop reduction in light from entering a lens. This band extends approximately 1.3" in both vertical directions before tapering to clear below and lighter above, with hard-edged lines of transition before both the lighter area and the clear area. The lighter area then extends approximately 2.6" until it meets the top edge of the filter, and provides a 2-stop reduction in light from entering a lens. This filter is made of durable, optical resin (CR39) and measures 2mm thick. A carrying pouch is also included for storage and transport.

The placement of a 2-stop band of density over a 3-stop band of density that is directly above a clear area allows the FotodioX Pro 7.9 x 10.2" Hard-Edge Reverse-Graduated Neutral Density 0.9 to 0.6 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 FotodioX Pro 7.9 x 10.2" Hard-Edge Reverse-Graduated Neutral Density 0.9 to 0.6 Filter. The hard-edged lines of transition in this reverse, graduated neutral density filter are useful for hard transitions between the sky, land, and multiple regions of brightness within the sky.

• Compatible with FotodioX WonderPana 66 and FreeArc Systems
• Effectively darkens bright skies, specifically during a sunrise or sunset, while allowing for a normal, unaffected exposure in the other regions of the image
• 2-stop band of density over a 3-stop band of density that is directly above a clear area creates a neutral density pattern that matches the positioning of the sun when it is at, or immediately above, the horizon
• 3-stop band of density extends approximately 1.1" in both vertical directions, and 2-stop band of density extends approximately 2.0" until it reaches the top edge of the filter
• 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 lines of transition between the 2-stop band of density and 3-stop band of density, as well as between the 3-stop band of density and the clear area
• Transition lines are useful for hard transitions between the sky, land, and multiple regions of brightness within the sky
• Filter does not affect the overall coloration of the image
• Constructed from optical resin (CR39) for clarity and durability
• Filter pouch included for storage and transport