The K&F Concept neutral density (ND) and circular polarizer (CPL) magnetic filter kit contains two ND filters, one for 8 stops, the other for 64 stops; a CPL filter; a threaded magnetic filter-holder ring, and a magnetic lens cover. The kit includes a padded bag to protect and hold the filters.

I ordered the kit with 82mm filters. The magnetic attachment is great for easily interchanging the filters. No need to unscrew a filter and then realign threads to reattach a different filter. You simply firmly tug on a filter to remove it, and then magnetically attach a different filter. Very simple and the filters are firmly held in place – no concerns about them accidentally detaching. The lens cover can be placed over any of the filters, so no need to remove a filter before putting the lens cover on. In addition, I was able to place the “pinch-style” cover that came with my lens on over the filters also, providing another option. Like the magnetic lens cover, the magnetic filters can stack on top of each other, but the filters are not threaded, so a threaded filter cannot be placed over the magnetic filters. The magnetic base allows the circular polarizer to rotate easily, while still providing a secure attachment to the lens. The filters worked well – the polarizer worked great to eliminate reflections, etc. and both ND filters allowed opening the aperture several more stops, reducing depth of field. (See included photo examples.) I have K&F Concep filters on two other lenses and have been very happy with those products. Likewise, I am very happy with how these magnetic filters worked on my camera.

I normally have a K&F 82mm threaded UV filter on my lens for protection. My only wish is the filter kit also included a UV filter or skylight filter that I could leave in place on the lens. As it sits now, I need to unscrew the UV filter and screw on the magnetic ring whenever I switch to an ND or CPL filter. I am shortly orderly a K&F Concept magnetic mount UV filter to avoid this cumbersome switch.