Hiya,
For those of you that have purchased/used official DJI ND Filters on Mini 4 Pro, what's your opinion on them? I know there seem bit more expensive vs 3rd party offer (given that the official set only has 3 filters), but I wonder whether they're worth it. I couldn't really find any videos or reviews on those specific filters. I've found DJI's official instruction video and those filters replace the original lense instead of being overlayed on top of it like the rest of 3rd party ones - it seems like a more sturdy solution.
Kinda a bumper the kit doesn't offer ND8 and ND16 is the lowest option hence my hesitation.

Thanks,

All filters are not superimposed but replace the original attachment; this is not a lens but a simple attachment.
It makes no sense to buy ND 8 and 16, taking into account the high aperture of the camera, only ND 64 or 32 makes sense
I did not notice a significant difference between expensive and cheap filters.

I use Freewell ND filters on all my drones.  They fit perfectly and are durable.  I usually buy the 6 pack.