This 138mm Tiffen 85B ND Filter 138mm 1-Stopblends both an amber color conversion 85B and a 0.3 neutral density filter. The ND filtration provides a 1-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) film.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.

0.3 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.

0.3 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. I'd like to add this filter to the Canon EF-S 18-55mm f/3.5-5.6 IS STM Lens. Is the 58mm filter the right size? Also is there a way to use a lens hood with the filter in place and if so what type?

A: The filter is the right size. The lens hood for the 18-55 is called the ew-63c made by Canon. There is a possibility that they could work together but i wouldn't bet on it. The hood would have to be applied before attaching the filter, and even if the filter could fit on with the lens hood attached it would be near impossible to tighten it on the filter ring. But the good news is that isn't really a problem. With modern coating on lenses, lens hoods, which prevent lens flare is practically not an issue unless you are shooting right in to the sun or bright light source. A lens hood wouldn't be able to prevent lens flare anyways when shooting into a bright light source. Basically, a lens hood will not have a large practical purpose so there's no reason to shoot with one on while using the neutral density filter.

Q: 2. Im looking to add this to my 17-40 mm lens for a canon 60D. While the 60D isn't a crop camera, and the lens is full frame, it still works well for me. What MM will I need and will it work?

A: This particular filter fits camera lenses with a 58mm filter thread. Please check the filter thread size on your lens to determine the correct size filter to order.

Q: 3. What is the material of the ring? Aluminum? Brass?

A: Aluminum

Q: 4. what is nd range in this filter how many stops

A: This filter is 2-8 stops.

Q: 5. Will this filter fit in the holders for a Tangerine Misfit mat box?

A: It will. It takes up 2 filter spaces.

Q: 6. will this fit on a Canon XA25 & does it eliminate the subject washout I get from bright/white stage lights?

A: This filter will fit any lens which has a 58mm filter thread. The Tiffen Variable Neutral Density Filter provides two to 8 stops of light control. This means that it limits the amount of light entering your lens. By limiting the amount of light entering your lens you achieve greater control over your camera. You can do long exposures with the VND (blur moving water, clouds, etc) or use it to control your depth of field in bright sun.

Q: 7. The spec says Front Filter Thread Size86mm , so can I use a normal 86mm lens cap on the outside of the filter? Thanks!

A: You should be able to use you 77mm lens cap. I do with mine.

Q: 8. What's the pitch of the threads?

A: Not sure about "thread pitch" however, I can say that is threads on & off my Canon RF 24-70mm f/2.8L IS USM Lens just fine.

Q: 9. I have a Sony Zeiss Vario-Tessar T* FE 16-35mm F4 ZA OSS lens. The filter diameter is 72mm. What size do I need to fit this ND FIlter? If I choose 72mm, won't vignetting occur at 16mm? I've heard this filter is thick.

A: You will need to get a thin 72mm filter, I would recommend the Cokin nd, click the link below to view; https://www.bhphotovideo.com/c/product/1487120-REG/cokin_cnv2_72_nuances_variable_nd_2_400.html

Q: 10. Will this Tiffen ND filter provide true color images? i.e., convey the same color compared to without the ND filter?

A: No, the Tiffen 77mm Variable Neutral Density Filter, will function like a polarizer to achieve the variable effect, which will change the hue of the image, similar to a polarizer.