This 4 to 9-stop, 55mm Haida NanoPro NDFilter 55mm 4-9 Stop Variableprovides 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 55mm 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    55mm 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 55mm 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. 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: 2. I have a Nikon 50mm f/1.4 lens with a good. The lens cap fits inside the lens and it says 58mm. Will this lens filter fit this lens?

A: Yes, any 58mm filter will fit.

Q: 3. 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: 4. Would this filter cause a colour shift when combined with the Hoya UV and IR Cut filter?

A: The Hoya 72mm Variable Density II Filter is meant to be color neutral without any color shift. This should not cause a color shift even if used with the Hoya 72mm UV and IR Cut Filter. One thing to keep watch for is an X-pattern near the maximum density.

Q: 5. Am I right to assume that a 58mm lens cap would fit over this filter?

A: Yes, technically a 58mm lens cap should fit. But filters like these can be wider. They essentially are made up of two polarizing filters sandwiched together. So they can be a bit wider because of that.

Q: 6. I have a vivitar 0.43x wide angle filter that accepts 62mm filter threads. I'm considering getting this Bower 62mm Variable ND filter and a 58-62 step up ring so I can use it on both the wide angle filter and my Canon G40's lens. My question is; would there be any amount of vignetting that would render the use of the ND filter on the wide angle filter pointless? How much of a vignette should I expect?

A: I can confirm what Roland said, this filter becomes unusable at its maximum/darkest setting. Roll it back just a bit and it's fine, but do keep that in mind.

Q: 7. Want to use on a canon ef 100-400 mm to photograph an eclipse. Will it fit/work?

A: Yes,your ND filter will work with solar eclipse. But, that is the least of your problems. If will give the impression that it reduces the light from the sun. It does for visible light, but does NOT reduce the permanent eye damage from UV, which will past through your ND filter as if you had no ND filter. If you do use it for solar eclipse, you MUST, to keep your vision, add add a CERTIFIED solar eclipse filter to stop the very damaging UV light. Without the solar filter, you'll most likely burn out your camera's sensor, along with your vision. Permanently. Wishing you great luck with your solar photos. Respectfully submitted, Bill Edmundson

Q: 8. does this 40.5mm variable ndx filter have screw threads on the outside to accommodate a metal screw-in lens hood?

A: The Vivitar 40.5mm Variable NDX Filter has 40.5mm front threads.Note it might be tough to use a threaded lens cap. The filter rotates so you need to hold it just so it does not when you try to screw in the lens cap.

Q: 9. Does this filter work with any other metal UV filter placed on the lens?

A: Unfortunately, the Haida NanoPro Magnetic Clear Night Filter (82mm) does not work with any other metal UV filter placed on the lens. It requires the Haida 82mm Magnetic Adapter Ring screwed onto the lens or the front of your UV filter if it has 82mm diameter filter threads and then you can use the Haida NanoPro Magnetic Clear Night Filter (82mm) over the adapter ring. https://bhpho.to/3xTA7FZ

Q: 10. Does it have a hard stop at each side of the scale, so it won't rotate too much?

A: The Haida NanoPro Variable Neutral Density 1.2 to 2.7 Filter (77mm, 4 to 9-Stop) does not have a hard stop, but it's design allows for smooth transition between stops and stays in place.