This review is based on the ND/PL combined filters, ranging from ND8 to ND64.I recently got the new Osmo Action 6 and thought I'd give these a go as my first foray into using filters (aside from a basic ND filter that my older digital camera has). It's a solid upgrade if you shoot outdoors, especially at this time of year with the low sun. They're well‑built, easy to attach, and instantly improve footage in bright or reflective environments.Pros:Smooth screw‑on fit - attaches securely with no wobble once you've removed the OEM lensGreat glare reduction - cuts reflections on water and glassCleaner motion - helps avoid harsh, jittery footageSharp image quality - no colour shift or softness vs the original imageUseful range of ND strengths - works from cloudy days to harsh sunCons:Polarisation angle needs attention - effect changes slightly as you rotate the camera, although this is to be expected with a combi filter.Overall a reliable, well‑made filter set that noticeably improves exposure and colour outdoors. Great value if you want smoother, more cinematic action footage. Although around £44 at time of review, there is currently a voucher to get it for under £40. Definitely a great value piece of kit to include in your camera bag.