This 4 to 9-stop, 72mm Haida NanoPro NDFilter 72mm 4-9 Stopprovides an exposure reduction of 4 to 9 stops. The 1.2 to 2.7 optical density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. The degree of density is easily controlled by rotating the front filter ring, helping you to predetermine the additional exposure length required. By increasing your aperture or slowing your exposure time, you are able to control depth of field and convey movement more easily. For easier, repeatable control over density settings, the front ring is also visually demarcated with dots that represent different density values and includes a rotation lever to further enable fast, as well as precise positioning of the front ring.

This filter is constructed from optical glass for clarity and color fidelity. To prevent internal ghosting and reflections, each glass surface includes 10 layers of anti-reflection coatings, which also offer greater protection to the filter substrate and help keep it clean for a longer period of time. The Nano coating associated with the Haida 72mm NanoPro Variable Neutral Density Filter provides an additional layer that results in an improved beading effect when the surface comes in contact with water or oil, allowing for more efficient cleaning.

Variable 1.2 to 2.7 Optical Density    Multicoated & Nano Coated    Optical Glass Construction    Darkens Entire Image Area    Greater Control Over Exposure Settings    Reduce Shutter Speeds, Widen Apertures    72mm Front Filter Threads    Filter Ring Rotation Lever    Plastic Case

Variable neutral density filter allows you to apply differing amounts of density from scene to scene.

1.2 to 2.7 optical density filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing an exposure reduction of 4 to 9 stops, this filter allows you to control depth of field and convey movement more easily.

Offers increased flexibility to use specific ISO settings or ISO films under bright ambient light.

Provides increased exposure flexibility while using cinema or video cameras within a designated film frame rate.

Constructed from optical glass for clarity as well as color fidelity.

Multicoated to prevent internal ghosting and reflections.

Nano coating provides an additional layer that results in an improved beading effect when in contact with water or oil for greater cleaning efficiency.

Aluminum-alloy filter ring with 72mm front filter threads allow for use with other filters.

Side lever allows the filter glass to be easily rotated.

Plastic filter case for storage and transport.

Related Questions and Answers

Q: 1. Are these compatible with the freewell magnetic filter system so I can stack or use with other filters or the freewell adapter ring?

A: No, the Haida NanoPro Magnetic Clear Night Filter without Adapter Ring (82mm) only works with the Haida system.

Q: 2. Is this filter multi-coated?

A: Yes, the Haida 58mm NanoPro Magnetic Interchangeable Variable ND 2-Filter Kit would be multi-coated.

Q: 3. Can this be used with K&F magnetic rings?

A: The Haida NanoPro Magnetic Clear Night Filter can't be used with K&F magnetic rings.

Q: 4. Is this filter useful when used on DSLR with WB on auto to photograph the milkey way?

A: Yes, the Haida 55mm NanoPro MC Clear-Night Filter will help with shots at night. of the Milky way. Best is not to have the camera set to Auto White balance and to have it set to day light.

Q: 5. Will this fit in Lee filter holder?

A: Yes, the Haida 100 x 100mm NanoPro MC Clear-Night Filter will fit in the Lee filter holder.

Q: 6. Would this filter work with Kase magnetic step-up rings? Kase does not make a 72mm light pollution filter.

A: Yes, you could use the Haida NanoPro Magnetic Clear Night Filter without Adapter Ring with a Kase Magnetic Step-Up Ring.

Q: 7. Is it UV too?

A: Haida 77mm NanoPro MC Clear Filter is a clear multicotaed glass to protect your lens from the elements. This filter does not reduces ultraviolet light, therefore it is not a UV filter.

Q: 8. Does the magnetic adapter ring that screws on the lens contain a 1-stop polarizer like the Freewell's base filters do with their system? Or is Haida's adapter a 0-stop CPL? I want the ability to remove the top VND filter when moving from bright to low-light environments, without having another stop of reduction below it (in the adapter).

A: The magnetic adapter ring in this Haida NanoPro kit does not contain a polarizer.

Q: 9. Will the Haida magnetic filter (77mm) stick to a different brand 77mm magnetic ring?

A: Technically it should fit other brand rings. Note, it has not been tested with any ring but the one it is made for.

Q: 10. What does 1.25x filter factor mean?

A: A filter with a 1.25x filter factor reduces your overall exposure by approximately 0.3 stops.