I've been using Freewell filters since 2016 with my Yuneec Q5004K and then my Autel X-Star Premium, P4A, Mavic Pro and now Mavic 2 Pro. I've tried other brands, including a brand that is well known in the photography/video community and has made filters for DSLRs and video cameras for some 70+ years and recently made drone filters for the X-Star... even those filters didn't compare to the Freewell filters. Freewell filters are the only filters on drones that I have used that don't drastically change the appearance of the imagery. They don't add vignette, they don't modify the overall hue... they do exactly as they are supposed to do. In my opinion they are by far the best filters made for drones and they have the largest selection of filters per drone. Not to mention they are an awesome company to work with if you do happen to have any issues.
I highly suggest going with Freewell for whatever drone you have.
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