Buy the clip indicated above and a kit of two filters always K&F CPL and Black Mist 1/4 for cinema/private production shooting, 67mm to be able to use them also on my Full Frame.
I find a strong and interesting use with DSLR lenses, I can't find a real function on the phone unless I change acquisition software and use third-party/official apps but specific to use the phone in completely manual mode.

I use this on a set of Meike S35 lenses with a Black Magic Pocket Cinema Camera 6K - very pleased with the ability to change the picture results to be a little softer and dreamier - all while keeping weight down on a gimbal.

A K&F Concept black diffusion 1/4 filter dream cinema effect camera filter is supplied.

The filter has an ultra-slim waterproof and scratch-resistant multi-layer glass. It is suitable for video, vlog and portrait photography. The processing and the quality are excellent. I particularly like the dream cinema effect. The shots with filter are really unique. I can recommend the filter to you. It's easy to attach.

The value for money is reasonable.
Therefore it gets 5 stars from me.

Very good quality. Robust and precise. Nikon 50mm on Black Magic Ursa with EF mount.

The adapter is very solid, to use lenses that are not too heavy it is perfect. I'll try cinema destinations in a few months, I'll update them.

Socket for mounting EF cinema lenses on Fuji x-t3, it does its job. I would have liked there to be a screw mount to support the lens from the back as well. For the main lenses, the adapter plays a bit of play on the Fuji mount. Even if the owner Regilent is mounted on the bars.

I bought it for its minimalism. All matte black and I love it. With my Nikon Ai F lenses it suits luxury

bought it to use some of my Nikon lenses on my Fuji X-E3, specifically my Sigma ultra wide-angle zoom and my 105mm micro-Nikkor. The adapter's two-tone silver and black metal construction gives it a solid feel and also complements my camera's black and silver color scheme. Focusing is a little tricky, but becomes a lot easier when Focus Tip is enabled on the camera. Just make sure you change your camera settings to "shoot without a lens" and flip the physical switch on the camera to manual focus. I love my little Fuji and was reluctant to take out my D7000 to use some of my specialty Nikkor lenses. I wasn't keen on the prospect of selling my Nikkor lenses to replace them with Fujinon lenses. This adapter gives me the best of both worlds. A little more aperture control would be nice, but other than that I'm quite happy!