This 100 x 100mm Neewer Square ND Filter 100x100mm 3-Stopfrom Neewer Square ND Filter 100x100mm 3-Stopis a slim ND filter with premium HD optical glass that helps reduce the amount of light entering your camera's sensor and provides 3-stops of light reduction without color cast. Featuring 28 layers of coatings, the filter can reduce glare and ghosting, making it perfect for outdoor photography. The coatings are water-repellent, scratch-resistant, and oil-resistant. The nano-metallic alloy coating on both sides of the optical glass reduces infrared light contamination and provides better color neutrality.

HD Optical Glass    Multi Nano-Coating Protection    Includes Pouch and Cleaning Cloth    IR Light Reduction

Related Questions and Answers

Q: 1. Does the front filter thread rotate when changing ND Amount? Looking to add a step up ring and go to a matte box.

A: Yes, the front threads on this filter are a 86mm size.

Q: 2. Can other filters screw on to the Nano filter to stack filters?

A: Unfortunately this filter is too thin to stack any more filters on top of it.

Q: 3. Does it come with a lens cap?

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

Q: 4. Can this filter be used on wide angle lenses for example Sigma 10-20mm? I have tried cheaper alternatives with extremely poor results. Uneven darkening and camera (Pentax K-7) metering failing resulting in gross underexposure.

A: I've tried only 2 variable ND filters: this B+W one and a similar one by Genustech. Non-variable ND filters have fewer problems. From what I've read, most of the variable ND's, like the Genustech, have the shortcomings you describe. This B+W does not. It is consistent in how it transmits light across the whole filter without the usual cross artifact that darkens the image unevenly. I use this filter mainly for video with large sensor cameras; my only qualm with the filter is that it doesn't get dark enough for very bright scenes and that's partly due to my lowest ISO rating being 400. So I have to stop down the lens anyway, just not as much, but more than I'd like to. I can't vouch for no vignetting on a 10mm super wide lens. I get no vignetting at 17mm focal length on my 17-55mm Nikon zoom. B+W's engineering and build quality is usually superior to the rest.

Q: 5. When stopped to the highest setting (5 stops) does the image degrade (sharpness, cross hatching)?

A: I've shot extensively with the 95mm, 72mm, & 67mm versions. You don't get any cross-hatching, but a definite vignette in the corners toward the 5 stop range when shooting photos. Video is not an issue as it crops to 16:9. Other than than, negligible colour cast & no sharpness issues.

Q: 6. The specs for the B+W 95mm Xs-Pro ND Vario filter show that the front filter size is also 95mm. However, for all other sizes the front filter size is larger than the back side that screws on to the lens. Can someone please confirm that the front threads for the 95mm model are also 95mm as in the specs or wider like the picture suggests? Thanks.

A: definitely not!! the rear thread of the filter is 95mm, however the front thread of the filter is 105mm

Q: 7. does this 95mm filter still allows for the Sony 200-600 mm lens factory hood to be mounted with the filter on?

A: You coudl use the included lens hood on the Sony FE 200-600mm f/5.6-6.3 G OSS Lens with the B+W 95mm XS-Pro Digital ND Vario MRC-Nano Filter.

Q: 8. Is there any reason this can't be stacked on a B&W 77mm ND1.5 to get an effective variable 1.8-3.0? Will that cause any unexpected issues with artifacts or the dreaded X, etc?

A: I believe this should be possible. The only concern would possible corner vigneting when using a wide angle lens. Dan

Q: 9. Preventing light leaks: Gasket available? Seal built in to holder?

A: you can try this BH #FOFG3P85

Q: 10. How smooth is the rotation ring?

A: The rotation ring on this filter moves easily and smoothly--much better than most variable ND filters.