The B+W XS-Pro MRC-Nano 810 ND Filter 35.5mm 10-Stopis a neutral density filter with a 1000x filter factor that provides a 10-stop exposure reduction. Its 3.0 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 anti-reflection coating. This Multi Resistant Coating (MRC) also offers greater protection to the filter substrate and helps it to stay clean for longer than with uncoated filters. The nano coating associated with XS-Pro filters provides an additional eighth layer over the MRC, resulting in an improved beading effect when in contact with water for greater cleaning efficiency.

B+W filters are constructed from SCHOTT glass for increased optical clarity and color fidelity. This filter features a thin brass filter ring to minimize the potential for vignetting while enhancing durability and preventing jamming. To further reduce the possibility of vignetting when this filter is in use, the filter ring's outside diameter is slightly larger than the actual thread size. This may prevent the use of some lens manufacturer bayonet hoods.

3.0 Optical Density    Multi Resistant Coating    SCHOTT Glass Construction    Thin Brass Filter Ring    35.5mm Front Filter Threads    Allows Reduced Shutter Speed    Allows Wider Aperture    Plastic Case

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

Providing a 10-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

Multi-coated to prevent internal ghosting and reflections

Constructed from SCHOTT glass for optical clarity

Thin brass filter ring helps to prevent vignetting and jamming and provides additional strength

Plastic case included for storage and transport

Related Questions and Answers

Q: 1. How thick is this filter?

A: I don't have this filter. Not sure why I was asked by BH to answer the question. Sorry.

Q: 2. Does it come with a lens cap?

A: No it does not. I purchased an 82mm one separately.

Q: 3. I have a 32-64mm Fuji GFX zoom lens on a GFX 50R. Can this filter be used at full wide angle without vignetting with this lens? Thanks.

A: The B+W 77mm XS-Pro Digital ND Vario MRC-Nano Filter will not vignette the Fuji 32-64mm lens. This is because the front of the filter is 82mm. By having a larger front than the mount, it reduces the risk of vignetting on wide angle lenses.

Q: 4. I have a Batis 25mm. will this filter fit the lens, and also, will the original lens cap fit on top of this filter?

A: Yes, this will fit the 67mm filter threads of the ZEISS Batis 25mm f/2 Lens for Sony E. However, since this filter is made wider so as to avoid vignetting, you will need a 72mm lens cap. Here is a quality one to match your lens. B+W 72mm Pro Snap-On Lens Cap MFR #65-1065134 • BH #BWLC72

Q: 5. Can I use this on my Nikon wide-angle lens 10-24mm without vignette?

A: Most likely, no. The rim on this filter being the variable midel, is much wider than a standard ND would be. You definitely need to find a fixed stop ND for a wide angle. Even with that, you may still have slight vignetting at the 10mm end.

Q: 6. will this filter vignette with the Canon EF 16-35mm F4L lens?

A: I'm a Nikon shooter, so my answer is in that context. I no longer have my Nikkor 17-35, so the best other lens I could test it on is my Nikkor 12-24, which is a DX lens (also a 77mm diameter). Yours, however, is an FX lens, so I don't know how that may affect the comparison. I tested it on the D800, in full format mode. I noticed the beginning of vignetting when the focal length was 19mm. I did it a few times, and that was consistent.So, if this is in any way accurate, you can probably expect to lose a few mm of focal length at the3 wide end when you use this filter. I don't know if this filter is made in a thinner version for wide angle use. Hope this helped.

Q: 7. Does this filter come with an 82 mm front cap?

A: Received only the filter without cap

Q: 8. Has anyone used this filter with the DJI X5 camera? If so, how is the color fidelity? Is there any specific color cast? Thank you.

A: B+W make very high quality filters. This will give you a great performance when used on lens with the X5.

Q: 9. Can anyone explain the dot markings to stops on this filter?

A: I had this same question and decided to run some tests (using my Nikon D810). I did this inside with the lighting (more or less) constant. I ran three sets of tests: 1) in manual mode with auto ISO, I noted the ISO without the filter and with the filter positioned at each of the ten different dot makings; 2) In manual mode (and constant ISO) I set the aperture to zero out the meter without the filter and at each of the dot markings; and 3) In aperture priority mode, I noted the shutter speed without the filter and at each of the dot markings. The results varied somewhat depending on the test. Reported below is the average of the three methods. The first dot corresponded to 1.0 stops, second dot to 1.1 stops, third dot to 1.4 stops, fourth dot to 1.8 stops, fifth dot to 2.2 stops, sixth dot to 2.5 stops, seventh dot to 2.8 stops, eighth dot to 3.2 stops, ninth dot to 3.7 stops, and tenth dot to 4.1 stops. So, as others have said, the dots are just a guide.

Q: 10. Hi,I was wondering 2 things about this filter:* does it have hard stops ?* what is the size of the front filter ? is it 62mm ? thanks

A: This B+W 62mm XS-Pro Digital ND Vario MRC nano Filter has hard stops from +1 to +5 stops. The front thread size on this filter is 67mm; in order to avoid vignetting, the front filter thread is oversized.