The 170 x 170mm Benro Master Series ND Filter 170x170mm 4-Stophas a 16x filter factor that provides a 4-stop exposure reduction. Its 1.2 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By increasing your aperture or slowing your exposure time, you can control depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.

To prevent internal ghosting and reflections, each glass surface includes multiple layers of antireflection coating. These coatings also offer greater protection to the filter substrate and help it to stay clean for longer than with uncoated filters. The nano coating associated with Benro Master Series neutral density filters provides an additional 13th layer over each side of this filter, resulting in an improved beading effect when in contact with water for greater cleaning efficiency.

This filter is constructed from SCHOTT B270 glass for increased optical clarity as well as color fidelity and measures 2mm thick.

1.2 Optical Density    Multicoated, Nano Coatings    2mm-Thick SCHOTT B270 Glass Construction    Darkens Entire Image    Allows Wider Aperture    Allows Reduced Shutter Speed    Plastic Case with Padded Pouch

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

Providing a 4-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

Filter does not affect coloration of the image and is ideal for use with other filters.

Filter surface is multicoated to prevent internal ghosting and reflections.

This filter is constructed from SCHOTT B270 glass for optical clarity.

Plastic case with padded pouch is included for storage and transport.

Related Questions and Answers

Q: 1. Why is there so little information on these cases? How many filters do they hold? What size filters will they hold? Do they all have rear velcro for attaching to bags?

A: It is made for 75mm filters. The actual amount of filters that can fit will vary with the thickness and construction of the filter. There are two compartments to this holder. The zippered side has one divider, and it is 20mm wide. The other side (with the Velcro flap) does not have any dividers, and is 16mm wide. The belt loop is fastened with Velcro.

Q: 2. Would this fit the Tilta Mirage?

A: The Benro Master Series 95mm Circular Polarizing Filter for Benro Master Filter Holder would not be compatible with the Tilta Mirage Matte Box as the matte box does not accept screw on filters. The Tilta 95mm Circular Polarizer for Mirage Matte Box, BH #TIMBT16POLA, would be the compatible circular polarizer.

Q: 3. What does MRC mean?

A: MRC on the B+W MRC Nano Master #803 ND0.9 Filter (72mm) stands for Multi Resistant Coating Besides protecting the filter it helps with reducing flair.

Q: 4. Is the front thread of 82 mm B+W MRC Nano Master #803 ND0.9 Filter still 82 mm? Can I put on a 82 mm CPL in front of this 82 mm ND filter? Thanks

A: Yes, this B+W MRC Nano Master #803 ND0.9 Filter (82mm) does have a front thread.

Q: 5. Can this be used with an f/16 aperture to safely photograph a partial eclipse on a mirrorless camera?

A: A ND Filter of 16 stops or higher is recommended to photograph the solar eclipse, or else you are at risk of damage.

Q: 6. Can this filter be stacked with other 67mm ND filters?

A: Yes, it is possible to stack this B+W MRC Nano Master #802 ND 0.6 Filter with other 67mm filters. However, it's important to note that the risk of vignetting would be higher when stacking more than one filter at a time and if the lens has a wide angle focal length.

Q: 7. Does this case have room to store filters with bento filter frame installed?

A: This bag is designed to hold a Benro filter holder as well as filters.

Q: 8. Does this holder have dividers and/or sleeves that come with it?

A: The holder comes with individual protective sleeves.

Q: 9. I'll try this again - I know the case has room for both the Benro filter holder and filters. My question is doe the case has enough room to store the filters when they are installed in the individual filter frames (NOT the filter holder that attaches to camera)?

A: Filters can be stored separately from frame in carry bag, but it is not recommended traveling with fitters inserted into the frame.

Q: 10. Will this filter work with the 95mm Polar Pro CPL B&H #POQLCP95 that I already own? Does it only accept Benro Master Series CPL?

A: Yes, the Benro Master Series 100mm Filter Holder with 95mm Mounting Ring will work with the PolarPro 95mm QuartzLine Circular Polarizer Filter. You can thread your CPL in front of the 95mm mounting ring and slide your 100 x 100mm ND filters.