I'm a professional video producer, and I shoot a lot of interviews for marketing videos. Formerly for global tech companies around the world, and now for startups and smaller businesses in local markets. So LOTS of variety of situations and locations.

My main camera is a Sony A7iv. I like it for the versatility and the fact that I can walk down the street anywhere in the world shooting broadcast quality video, but I look like every other resident or tourist. My current main lens for documentary-style shoots is a Sigma Art 24-70mm, with an 82mm filter size.

One downside of crisp 4K video is just that ... it can be too crisp. I've manually dialed in a really nice picture profile that gives me beautiful highlight roll-off and a pleasing image, but I sometimes like to soften up the interviews just a tiny bit. One of the oldest methods is using some type of filter in front of or behind the lens. WAY back in early cinema, this could be gauze or nylon or vaseline in front of the lens, or even on the back of the lens. And when I was assisting on a commercial shoot I learned about stretching kitchen plastic wrap in front of the lens, holding it taut with a rubber band. Anything to make video look less video-y. I first became aware of black or beige promist filters when I started shooting TV in the 1980s, so I know this type of system has been around for a while.

I just received this nice K&F kit. From the look of it, it's similar to a black promist. I chose the 1/8th because it's the most subtle version (smallest black specks in the filter). And I'm really looking forward to using it. The glass looks crystal clear, and the rest of the workmanship feels solid and well-made.

The fabric protective case is a nice touch, and has a magnetic flap to keep it closed. The case has a decent amount of rigidity, but also a bit of flexibility, so the filter should be safe while also allowing itself to be wedged into your overstuffed camera bag. The 82mm filter screws on cleanly to my Sigma lens.

Cute, gimmicky idea with the shipping box: They include a piece of card stock, pre-scored so you can fold it into a stand, and with tape strips on the back. If you fold up the card, and remove the foam insert from the box, the gold foil bottom portion of the box can be used as a picture frame or shadow box. Nifty idea, although neither of my 20-something daughters was interested in taking on that craft project.