Strong optically and mechanically for aerial imaging, with minor caution pointsI recently fitted this circular polarizer filter to my DJI Mini 5 Pro for outdoor footage and aerial photography, and I’m pleased by how it improved image quality and handling overall.**What impressed me*** The multi‑coated optical glass delivers very good clarity. I noticed less glare and more saturated skies and foliage when shooting over water or reflective surfaces. The filter helped reduce unwanted reflections and improved contrast in bright daylight situations.* Build quality is solid: the frame is well machined, threads smoothly onto the drone mount without wobble, and the rotating ring for the polarizer adjustment works with smooth friction (so I could fine‑tune how much polarization was in effect).* Installation was straightforward — once I matched the mount threads and ensured gimbal calibration, the filter worked seamlessly with my drone without interfering with the gimbal motors or camera movement.* For the price and features, it offers very good value if you want to level up your drone capture quality, especially in bright sunny outdoor conditions where glare and reflections matter.**Things to keep in mind*** As with any CPL filter, performance depends heavily on lighting angle. If the sun is directly overhead or at certain angles, the polarization effect is minimal. The filter won’t magically fix exposure issues — you still need correct camera settings.* There is a slight loss of light (generally one stop or so) since the CPL introduces additional glass and polarizing film. In very low‑light or indoor situations this may matter, though in bright daylight the effect is negligible.* Weight and gimbal balance: While this filter is well made, adding any extra accessory to a drone’s camera always warrants that you check gimbal calibration and ensure the mount remains secure. On undersized drones or with heavier lenses this can matter more.* Cost vs need: If most of your shooting is indoor, shadowed, or low‑glare conditions, the benefit of a CPL may be less obvious. It shines most in bright, outdoor, high-reflection scenarios.**Final verdict**If you shoot aerial footage outdoors, especially over water, glass, snow or foliage where reflections and glare reduce image quality, this K&F Concept CPL filter is a very good choice — strong optics, reliable build, and solid value.