Shock-resistant optical glass construction

• Compatible with Haida 150 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
• 3-stop band of density that tapers to a 1-stop density at the edge above it while 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 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 3-stop band of density and the clear area below it is useful for hard transitions between the sky and land
• 3-stop to 1-stop gradation with soft-edged line of transition is applicable to multiple regions of brightness within the sky
• Filter does not affect the overall coloration of the image
• 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