The 6.6 x 6.6" Tiffen 85B/ND Filter 6.6" - 4-Stop Neutral Densityblends both an amber color conversion 85B and a 1.2 neutral density filter. The ND filtration provides a 4-stop exposure reduction for darkening the entire image in order to photograph with a wider aperture or slower shutter speed than normally required. The 85B filtration covers the entire filter plane and converts the color temperature to 3200K for use with type B (tungsten) films.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between two pieces of optical glass, and grinding flat to a tolerance of 1/10,000th of an inch. This filter measures 6.6 x 6.6" / 167.6 x 167.6mm.

1.2 Optical Density    ColorCore Technology    Amber 85B and Neutral Density    Warming Filter to Decrease Color Temp    ND Filter to Increase Exposure Length

Combination of both an amber color conversion 85B and a neutral density filter.

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

85B filter converts the color temperature to 3200K, allowing you to use type B tungsten-balanced film in daylight situations.

Related Questions and Answers

Q: 1. Does this have hard stops?

A: No.

Q: 2. I've never heard of magnalium. I always by brass rings because they don't bind like aluminum rings. How does magnalium compare?

A: Magnalium is an aluminum alloy with 10-5% magnesium and 90-95% aluminum. It is light, strong, and resists corrosion. In addition, the strength and hardness of aluminum increase when it is alloyed with such substances as magnesium, manganese, nickel, chromium, zinc, iron, copper, and silicon. Magnalium—lighter and more workable than aluminum—is used in making metal mirrors and scientific instruments. Since it is 90-90% aluminum, cross threading may still occur

Q: 3. Traveling to Tha MARA Kenya. Using a Sony Cybershot what lens kit to order?

A: The Sony Cybershot is a point and shoot camera. This type of camera does not typically have threads on the lens to accept filters, though some do. You can find look up your camera on the B&H website, then click SPECS to determine the filter size (if any) for your camera model.

Q: 4. what size are they?

A: These filters fit on lenses with a 46mm filter thread.

Q: 5. Does the NiSi 77mm Variable ND 1.5 to 5 filter stop have a HARD STOP?

A: Yes, the NiSi 77mm Variable Neutral Density 0.45 to 1.5 Filter (1.5 to 5-Stop) has hard stops.

Q: 6. Will these work with the DJI Zenmuse X5 15mm lens?

A: These filters will work on any lens with a 46mm filter thread

Q: 7. does this have ir control?

A: This is not for controlling Infrared light.

Q: 8. Will this fit in the 52mm filter holder slot for Nikon 200mm f2 or 200-400 f4 lenses?

A: The Urth 52mm ND64 1.8 Lens Filter Plus+ (6-Stop) may or may not fit the Nikkor 200mm f/2 or Nikkor 200-400mm f/4 lens, but the only filters guaranteed to fit are Nikon filters.

Q: 9. I ordered this and have noticed that the lens cap of none of my 77mm lenses does not fit. Is there a cap that can fit over this filter?

A: This 90mm push-on lens cap will work for this filter: https://www.bhphotovideo.com/c/product/125305-REG/Kaiser_206990_90mm_Push_On_Lens_Cap.html

Q: 10. Can these be stacked -- screwed together?

A: Yes, they can be screwed together