This 3-stop, 100 x 150mm X-PRO Square Soft-Edge Graduated ND Filter with Frame from K&F Concept is made for the X-Pro Square Filter Holder System. This soft edge graduated filter allows a selective area of density to be added to an image, making it an essential tool for enhancing landscape images. This filter's soft edge allows the area above an uneven horizon line, like a city or wooded area, to be darkened by three stops to make the sky more pronounced.

Made of high-quality optical glass, this 100 x 150mm, 2mm thick filter features 28 layers of multicoating for optimal light transmission without adding any color cast. The coating also protects the filter from water, oil, minor scratches, and abrasions. It features a protective frame with large tabs that make it easy to install and remove from the X-Pro filter holder system.

0.9 Optical Density    28-Layer Multicoating    2mm Thick Optical Glass Construction    Moisture-Resistant Coating    Scratch-Resistant Coating    Reduce Exposure in Selective Areas    Allows Long Shutter Speed, Wide Aperture    Leather Case

• Fits the K&F Concept X-PRO Filter Holder System
• Plastic filter frame has a tab for easy handling
• High-quality AGC optical glass
• Nano-filter multi-coating reduces lens flare and ghosting for high light transmittance with no color cast
• 28-layer coating is scratch resistant, waterproof, oilproof, dustproof, and suitable for harsh environments and locations

Related Questions and Answers

Q: 1. Do you think I would get vignetting if I used this on a 10mm with a 77mm filter thread and a step up ring?

A: I suspect you would get 'some' vignetting, but don't have actual experience with this combination.

Q: 2. Will these lens caps fit the 77 & 82MM Monfrotto Xume magnetic filter adapter sets?

A: Unfortunately no. The K&F Concept Soft Silicone Cap for Variable ND Filters (77mm) will only fit the K&F variable ND 77mm filters.

Q: 3. Does this filter cause that dreaded hourglass darkening when set at 1.5? I have one that if I get past 1/2 the settings, it gets a distorted discoloration. Thanks

A: I have taken a series of exposures at each stop...bright light, but needed long exposure. I didn't see any hourglass effect.

Q: 4. Are these stackable? I'm looking for a ND+CPL

A: The K&F Concept ND & CPL Filter Kit for DJI Avata (3-Pack) are not stackable.

Q: 5. 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: 6. 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: 7. Does this come with a single corner or is it a full set of 4? Also, similar question for the matching Ears (409500-3) - is it a single item or a full set?

A: These are sold individually.

Q: 8. Will these caps fit over the Tiffen 77mm or 82mm Variable ND?

A: Unfortunately no. The K&F Concept Soft Silicone Cap for Variable ND Filters (77mm) will only fit the K&F variable ND 77mm filters.

Q: 9. 82mm. Does this filter have "front threads", for instance to screw on a lens hood?

A: The following system offer 86mm Front Filter Threads.

Q: 10. Does this filter vignette with a Canon 10-22 lens at 10mm on crop sensor camera?

A: A super-wide such as this lens will inherently vignette. The filter is a high level of quality and does not add any noticeable distortion to photos.