I'm the most unlucky person on the entire planet then! I have all sorts of problems with Jello Effect, strange curved prop shadows in the top of the image, etc., if I don't use an ND filter (and the RIGHT one for that matter), when shooting in bright sunlight.
When I do use the correct filter, these problems all go away. Further, my weird Mavic with it's unusual only-I-am-cursed-with-it bizzaro camera also seems to benefit from polarized filters too, bringing out much deeper greens and blues when oriented correctly. Weird, huh?
Or maybe its me -- I'm hallucinating. That must be it.
Or do others here see obnoxious distortions like that too, and ND filters mysteriously fix these problems for them too, despite the fact we've been assured by
@GadgetGuy it's just a scam?