I’ve been reading up about polarised ND filters and watched a few YouTube vids too.
What nobody has told me though, is the angle / alignment a one-time thing? Or an every-time thing?
One YT vid showed the guy holding the filter in front of the camera and rotating the filter to get the best view / setting.
But I’m not sure if this needs to be done every time, or can you mark the filter with a notch or pen to show the best ‘top’ point?
Or does the angle / alignment change depending on the direction of the sun, direction of flight etc, therefore meaning you need to set it each and every time?
Hope this question makes sense, I’m not sure how well I explained that