The 4 x 5.65", 3-stop Cokin Z-Pro ND Filter 4x5.65" 3-Stop Center-Graduatedis designed for use with a Cokin Z-Pro Series Filter Holder. It can be applied to darken the sky, specifically along the horizon 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 0.9 band of density across its center region that provides up to a 3-stop reduction in light from entering a lens. The band of density extends approximately 1.2" in both vertical directions before tapering to clear below and above, with soft-edged lines of transition before the clear areas. The clear areas then extend approximately 2.2" until they meet the top and bottom edges of the filter.

A narrow 0.9 band of density with larger clear areas directly above and below it allows the Cokin NUANCES Extreme Z-Pro Series Center-Graduated Neutral Density 0.9 Filter to specifically match the positioning of the sun when it is at, or immediately above, the horizon. In such instances, the sun will appear closer to the center of an image as opposed to the upper edge, and an increase in brightness is created which is much more prominent on both sides of the sun than either above or below it. This pattern of brightness corresponds to the density pattern on the Cokin NUANCES Extreme Z-Pro Series Center-Graduated Neutral Density 0.9 Filter. The soft-edged lines of transition in this filter are useful for images that have features alongside the sun that cannot be confined within the band of density.

Cokin NUANCES Extreme filters are constructed from tempered, shock-resistant glass and feature nano-metallic alloy film coatings on both sides of the filter surface to attenuate infrared light while maintaining true color fidelity, even when stacked with other Cokin NUANCES or NUANCES Extreme filters. Anti-glare coatings further help to reduce surface reflections for increased contrast and clarity, while additional hydrophobic coatings result in an improved beading effect when in contact with water for greater cleaning efficiency. Additionally, Cokin NUANCES Extreme filters feature C-shaped edges. This rounded edge shape resists chipping, further enhancing durability.

0.9 Optical Density    Nano-Metallic Alloy Film Coatings    Anti-Glare and Hydrophobic Coatings    Shock-Resistant Glass Construction    Selectively Add Density Over Horizons    Effect Confined Across Filter Center    Soft-Edge Transitions    C-Shaped Edges, Padded Pouch

• This filter is compatible with a Z-Pro Series Filter Holder.
• Effectively darkens skies, specifically along the horizon during a sunrise or sunset, while allowing for a normal, unaffected exposure in the other regions of the image.
• 3-stop band of density across filter that extends approximately 1.2" in both vertical directions before tapering to clear areas that extend 2.2" until they meet the top and bottom edges of the filter.
• This filter creates a neutral density pattern that matches the positioning of the sun when it is at, or immediately above the horizon.
• Density pattern to specifically match the brightness pattern of the sun when it appears at or is close to the horizon as opposed to a higher angle, which creates an increase in brightness that is much more prominent on both sides of the sun than either above or below it.
• Soft-edged line of transition between the 3-stop band of density and the clear areas above and below it are useful for images that have features alongside the sun that cannot be confined within the band of density.
• Filter does not affect the overall coloration of the image.
• Tempered, shock-resistant glass construction maintains high optical clarity with low reflectivity.
• A nano-metallic alloy applied to both sides of the filter attenuates infrared light and ensures neutral coloration even when stacked with other Cokin NUANCES or NUANCES Extreme filters.
• Anti-glare coatings help to reduce surface reflections for increased contrast and color fidelity.
• Hydrophobic coatings result in an improved beading effect when in contact with water for greater cleaning efficiency.
• C-shaped edges resist chipping to further enhance durability.
• Padded pouch is included for storage and transport.

Related Questions and Answers

Q: 1. Can they be stacked together to increase the final f-stop. i.e. 1 f-stop filter + 3 f-stop = 4 f-stop?

A: Yes they can!

Q: 2. This is NOT a gradual neutral density filter, correct? Thank you!

A: No, the Cokin 84 x 84mm 0.6 Neutral Density 153 Filter is not a graduated neutral density filters. As indicated in the Overview, the Cokin 84 x 84mm 0.6 Neutral Density 153 Filter is a solid ND filter providing a 2 stop exposure reduction. This 0.6 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required.

Q: 3. Does this have front threads? So I could mount a lens hood? Or stack a filter?

A: No, the K&F Concept Nano X-Pro HD Variable ND2-400 Filter (62mm) does not have any front threads for mounting a filter or hood.

Q: 4. will it work with the nisi v6 holder?

A: The K&F Concept X-Pro Square ND64 Filter with Frame (100x100) is not compatible with the NiSi V6 Filter Holder. This item is designed for use with the X-Pro Square Filter Holder System.

Q: 5. Is this compatible with a 40mm lens?

A: It depends on which particular make and model 40mm lens you are inquiring regarding. The underside of the lens cap will feature the lens' cap/filter size and you can check on your lens there. If you're still not sure you may email askbh@a href= http://bhphoto.com target= _blank bhphoto.com/a and indicate your specific lens and we can confirm.

Q: 6. Is this recommended for digital cameras?

A: The Hoya 72mm Neutral Density (ND) 0.3 Hoya Multi-Coated (HMC) Glass Filter is recommended for both digital and film cameras. Hoya's Pro Digital line of filters are slimmer but still have threading on both sides of the filter. Ultra-thin filter frames help to avoid vignetting on super wide angle lenses while the front threads mean they will also hold a lens cap. HMC filters feature a 3 layer multi-coating while their Pro Digital line's multi-coating is optimized for use with digital sensors.

Q: 7. What are the filter dimensions? 100x100 mm?

A: Cokin*

Q: 8. Work for Sony FE 50mm f/1.8 Lens?

A: Yes, the K&F Concept Nano-X Pro Variable ND2-ND400 Filter (49mm, 1-9 Stop) will work on the Sony FE 50mm f/1.8 Lens.

Q: 9. will I be able to use the hood on my 35mm 1.2 voightlander with this filter?

A: I have this filter in 49mm on a Pentax FA 43 and I am able to screw on a B+W metal hood with no problem.

Q: 10. I plan on using this filter with my canon 70-200mm L series lens. Will I still be able to use the lens hood with this filter?

A: K&F Concept 77mm Nano X-Pro Magnetic ND2-32 (1-5 Stop) Variable Neutral Density Filter is very wide in the front and the lens hood in the Canon 70-200 is very narrow so the lens hood will probably not work with the filter unfortunately.