This 3- to 7-stop, 58mm Nano-X Magnetic Variable ND Filter from K&F Concept allows you to quickly install the filter adapter ring on the lens thanks to its magnetic properties. The filter utilizes cutting-edge technology to avoid the common "X" cross on a wide-angle and telephoto lens. Both sides of the glass have nano-coating layers that make it waterproof, scratch resistant, and glare resistant, effectively protecting the camera lens.

Variable 0.9 to 2.1 Optical Density    28-Layers of Nano-Coating    1-Second-Swap Magnetic Filter    Avoids Common "X" Cross    Waterproof and Dustproof

This variable ND8-ND128 filter with magnetic technology can be installed in seconds for a faster installation than traditional thread filters.

The adapter ring has a thread to be screwed onto the lens. The ND8-ND128 magnetic filter engages in a magnetic way. Magnetic adapter rings are also suitable for other magnetic filters such as the magnetic CPL, magnetic ND8, magnetic black mist, and the magnetic ND1000 by K&F Concept.

K&F Concept utilizes cutting-edge technology (frame self-lock) to avoid the common "X" cross on a wide-angle and telephoto lens.

Both sides of the glass have nanometer coating (a total of 28 layers) that makes it waterproof, scratch resistant, and anti-glaring, effectively protecting the camera lens.

Related Questions and Answers

Q: 1. Can this be used in as a drop in rear element for a 400mm Nikon lens?

A: Unfortunately no. The K&F Concept 52mm Nano-X HD Variable ND2-32 Fader Waterproof & Scratch-Resistant Filter has a 52mm mounting thread for mounting on the front of a lens but the front of the filter has 55mm threads for using a 55mm cap or other filters. Therefore it is too large to fit into a 52mm drop in holder.

Q: 2. Will this fit Zeiss Batis 67mm lens with the hood ON?

A: I would say most likely no as I cannot use a hood with any of my lenses when using this filter.

Q: 3. 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: 4. Hi i plan to use this filter on Nikon 28mm f/1.8G AF-S Nikkor mount on Nikon D700. Any concern?This is an expensive filter so just want to be sure before purchase.Thanks!

A: They are 100% compatible and will work well together.

Q: 5. Is the outer-edge threaded?. If so, what size?

A: There does not appear to be any sort of screw for mounting another lens on the front of this one.

Q: 6. Does this filter vignette with a Panasonic 8-18 lens at 8mm with gh5s?

A: This is a 72mm filter, the Panasonic Leica DG Vario-Elmarit 8-18mm f/2.8-4 ASPH. Lens has a 67mm filter thread. Instead you would need BH #BWNDVXSP67 for that lens. https://bhpho.to/2YH9VNd

Q: 7. Will it fit Sigma 16mm F1.4 DC DN EF-M?

A: Yes, as the Sigma 16mm f/1.4 DC DN Contemporary Lens has 67mm filter threads on the front of the lens, the K&F Concept Nano-X Variable Fader NDX HD Green-Coated Waterproof Anti-Scratch Japan Optics Filter (67mm, ND2-32) is compatible for use with the Sigma 16mm f/1.4 DC DN Contemporary Lens.

Q: 8. 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: 9. 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: 10. Is this a hard stop filter where it goes from 2 to 5 and then it can't proceed further ?

A: The rotation of the filter is smooth. It does not click as you rotate it. It also stops rotating once you reach the maximum or minimum density.