The filters are not easy to use. I don't mean as in taking them on and off. That's easy. I mean in getting the results you expect. After doing a variety of tests, sometimes you can get away with using the camera in Auto mode, and sometimes you'll need to manually set the shutter speed or make an EV adjustment. It depends on whether you are looking into the sun, have the sun slightly out of frame, or are pointing completely away from the sun. Lots and lots of variables. The short result is, the filters more or less work. The long result is, it's definitely not plug and play. You'll have to work at it. Update (9/24/20) I originally posted a review and then pulled it at the last minute due to some new tests, so that is what you see above. I'm now going back to my original review. What changed my mind? I got a new set of filters, ND4, 8, 16 from another company and they match the DJI ND16 that comes with the Fly More Combo. What that means is like another reviewer said. These filters are super weak. The ND16 of this set is more like an ND4 which is why it was near impossible to see a difference in the photos. I'll post some pictures to illustrate my point. The first will be my test images and the second is from my DSLR to illustrate what just 2 stops, let alone 3 should look like. These filters give you about 1 stop. Nowhere near advertised. Original Review: I've only been using the filters for 2 days so maybe I'm doing something wrong but they aren't doing anything for me. I mean literally, I can't tell the difference between images with the clear DJI filter and these when the camera is in Auto mode. I assumed that I'd see darker skies or a darker bottom, even in Auto mode, and I'm not. I've run a variety of tests so far and they aren't performing how I would expect. What I wanted to be able to do is to shoot sunrises, and more specifically sunsets. Bring the exposure down on the sky while keeping the landscape somewhat lit. It's doing none of that. I turned the camera around and shot with the sun to my back. I expect the cloudless sky to be darker. It wasn't. Maybe it works better with clouds, who knows. What I ultimately did was shown in the first image. I said, how much filtering are these actually doing? Each image is named with the filter used (I see you can't see the names in the small ZeeBooth thumbnail). The top left is no filter. I needed a way to get consistent light to test so I used my video light at full blast shooting at a constant 1/1000 shutter speed. The light below the No Filter is the ND8-GR. On the right-hand side, top to bottom, is the ND16-4, DJI ND16, and then the ND32-8. As you can see, there is filtering going on in the top with all 3 filters. It's the middle right image though that tells the story. That's the DJI ND16 filter. Another reviewer said the filter strength is off. He's right. The ND32 isn't quite as dark as the ND16. These filters are at least 1 stop less powerful than advertised (or at least compared to the DJI). Once you get off the ND8, the difference between the top and bottom is just 2 stops. I'm not convinced that we even get that. Which is why I'm not seeing it in my video/images. I've posted a second image shot with my DSLR. The left side is perfectly exposed, the right side is 2 stops darker. You definitely notice a 2 stop difference! The ND8 is supposed to give you 3 stops difference. It's barely 1 in most cases. Update 2 (9/24/20): Before I return these filters, I ran one more test. That would be the 3rd image. On the left-hand side is the Freewell ND8-GR. On the right-hand side is the ND8 from the other manufacturer. If the Freewell filters were as advertised, the top would look like the right-hand side and then quickly open up to be an unfiltered image 1/2 way down. You don't need to pixel peep to see the Freewell filters aren't even close to ND8 or anything else higher. SO disappointing since these filters for me are highly desirable. PS. Both images in the test were done in manual mode. ISO 100 @ 1/240. That was EV = 0 for the Freewell and registered EV -2.7 on the other brand ND8.
