The only real limitation I found is that the lettering on the filters is small and the CPL is not very immediate to adjust on the fly, especially if you have little light or are in a hurry. For the rest, the package is complete: a hard case comes with 6 filters (ND4/PL, ND8/PL, ND16/PL, ND32/PL, ND64/PL and “pure” CPL) well housed in the internal sponge, plus a cleaning cloth. Everything stays tidy in the drone backpack and there is no risk of scratching them.

These filters are used to keep the light on the Mini 5 Pro's sensor under control and to give a more “cinematic” look to photos and videos. In practice, they allow you to respect the famous shutter rule and to avoid videos that are too “snappy” in the hours of full sun. PLs also help reduce reflections and glare on water, glossy surfaces and glass, improving contrast and saturation in many real shooting situations.

The construction is convincing: optical glass with anti-reflection and hydro/oleophobic treatments, mounted on very light plastic frames but which still give a good feeling of solidity. The snap attachment on the drone camera is precise, I haven't had strange games or problems with the gimbal, and once mounted they don't move. In flight I didn't notice obvious color dominants, at most a slight drop in saturation with the “toughest” filters, nothing that can't be corrected in post.

For about 42€ the quality/price ratio seems honest to me: they are not top-of-the-range “cinema” filters, but for serious and conscious use of the Mini 5 Pro they do their job well and cover practically all the lighting conditions that may happen. If you want to take drone footage to a more controlled level without spending crazy amounts, the purchase in my opinion makes sense and pays for itself quickly.