HAIDA FILTER RED DIAMOND REVERSE GRAD. GND 0.9 - 100X150 3 STEPS HD4291

Haida 100 x 150mm Red Diamond, Hard Edge, Reverse Graduated, Neutral Density, 0.9 to 0.3 Filter (3 to 1 Stop)

This Haida 100 x 150mm Red Diamond Hard Edge Reverse Graduated Neutral Density 0.9 to 0.3 Neutral Density Filter is compatible with the Haida 100 or 100-Pro Filter Holder. It can be applied to darken bright skies, specifically during sunrise or sunset, while allowing normal and unaffected exposure in other regions of the image.
This filter achieves its effect with a 0.9 density band in its central region that provides a 3-stop reduction in light entering a lens. This band extends approximately 15mm in both vertical directions. With a smooth-edged transition line, it tapers to a density of 0.3 providing a 1-step reduction in light at the edge above it. Directly below the 0.9 density band, it narrows to lighten, with a hard-edged transition line before the cleared area.
Placing a 0.9 density band that tapers to a density of 0.3 above it with a clear area directly below allows the Haida 100 x 150mm Red Diamond Hard-Edge Graduated Neutral Density Filter inversely from 0.9 to 0.3 coincide with the position of the filter. sun when it is on or just above the horizon. In such cases, the sun may appear closer to the center of an image as opposed to the top edge, creating an increase in brightness that is more prominent on both sides of the sun than above it. This gloss pattern corresponds to the density pattern on the Haida 100 x 150 mm Red Diamond Hard-Edge filter with a neutral density graduated inversely from 0.9 to 0.3. The hard-edged transition line in this reverse graduated neutral density filter is useful for difficult transitions between heaven and earth.
Haida Red Diamond filters are made of impact resistant optical glass. To avoid ghosting and internal reflections, while further enhancing clarity and color fidelity, each glass surface includes 10 layers of anti-reflective nanolayers. An additional 10 scratch-resistant hydrophobic coatings further protect the filter substrate and result in an enhanced beading effect when its surfaces come in contact with water or oil, allowing for more efficient cleaning. Additionally, Haida Red Diamond filters feature rounded edges for easier placement within a compatible filter holder slot.
A metal box is included for storage and transport, as well as a gasket that blocks the light. This gasket forms a seal that is intended to prevent stray light, which could have unwanted effects on exposure, from getting between the filter and the lens behind it.
Compatible with Haida 100 or 100-Pro filter holders
Effectively darkens bright skies, specifically during sunrise or sunset, while allowing normal, unaffected exposure in other regions of the image.
3-stop density band that narrows to a 1-stop density at the top edge while directly above a clear area creates a neutral density pattern that matches the position of the sun when it is at or just above the horizon. same.
3-stop density band extends approximately 15mm in both vertical directions
The density pattern corresponds to the brightness pattern of the sun when it appears or is closer to the horizon rather than at a higher angle, creating an increase in brightness that is more prominent on both sides of the sun than above it.
The hard-edged transition line between the 3-stop density band and the clear area below it is useful for difficult transitions between heaven and earth.
3-stop to 1-stop gradation with smooth edge transition line is applicable to multiple regions of brightness within the sky
The filter does not affect the overall coloration of the image.
Shock resistant optical glass construction
10 layers of anti-reflective nanolayers on each glass surface prevent ghosting and internal 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 enhanced bead effect when in contact with water or oil for increased cleaning efficiency
Rounded edges for easier placement within a compatible filter holder slot
When paired with a compatible filter holder, the included gasket helps prevent light from between the filter and the lens behind it, which can have an unwanted effect on exposure.