I just struggled with the ND issue. I looked for ND8 and ND16.
I considered Taco-RC but couldn't find an Amazon dealer willing to deliver it...
So I ended up with Anbee® 3pcs Multi-coated Neutral Density Filter ND4 ND8 ND16 Set for DJI Phantom 3 Professional & Advanced Camera.
Like TACO-RC, it should be the same size and 0.05 oz weight as the original DJI UV filter so the gimbal and the original DJI gimbal lock should work as usual and a lens cap should also fit all my filters.
Detailed comparison of commonly used ND filters
ND filter
Anbee® 3pcs Multi-coated Neutral Density Filter ND4 ND8: Amazon.co.uk: Camera & Photo
I considered Taco-RC but couldn't find an Amazon dealer willing to deliver it...
So I ended up with Anbee® 3pcs Multi-coated Neutral Density Filter ND4 ND8 ND16 Set for DJI Phantom 3 Professional & Advanced Camera.
Like TACO-RC, it should be the same size and 0.05 oz weight as the original DJI UV filter so the gimbal and the original DJI gimbal lock should work as usual and a lens cap should also fit all my filters.
Detailed comparison of commonly used ND filters
ND filter
Anbee® 3pcs Multi-coated Neutral Density Filter ND4 ND8: Amazon.co.uk: Camera & Photo