I used the nd filters 3 times and the stickiness is gone.There is only 2 extra protective film in this set and Banggood don't sell the protective film. There's no metal on the camera lens of the Feiyu pocket and that's why the ND filters come with the protective film. Maybe the double sided scrapbook tape will work? If not the filters is not use able.

I used the nd filters 3 times and the stickiness is gone.There is only 2 extra protective film in this set and Banggood don't sell the protective film. There's no metal on the camera lens of the Feiyu pocket and that's why the ND filters come with the protective film. Maybe the double sided scrapbook tape will work? If not the filters is not use able.

I used the nd filters 3 times and the stickiness is gone.There is only 2 extra protective film in this set and Banggood don't sell the protective film. There's no metal on the camera lens of the Feiyu pocket and that's why the ND filters come with the protective film. Maybe the double sided scrapbook tape will work? If not the filters is not use able.