For ND4 ND8 Lens Filter:
To enable slow shutter speeds to be used, especially with fast films, to record movement in subjects such as waterfalls, clouds, cars, seas, etc.
To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background.
To decrease the effective ISO of high speed film and allow it to be used outdoors in blight situations.
To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which would normally cause over-exposure.
For UV Lens Filter:
A UV filter is used to reduce UV rays from entering the lens and striking the film. Modern lenses often have UV protection built into them as well as digital sensors, however, UV filters are commonly used to help protect the surface of the lens from scratches, smudges, dirt and other hazards.
for DJI Phantom 4 & Phantom 3 Professional & Advanced ONLY (Phantom 3 Standard Unfit)
You should know before buying:
– DJI Phantom 4 & Phantom 3 Professional & Advanced (Suitable)
before screw the new filter lens, you should remove the old lens from your drone to add these. Otherwise, it may crush your own camera glass, or you can’t screw the new lens to your drone.
– DJI Phantom 3 Standard (Not suitable):
you should add another lens adapting ring on your drone camera, and then screw the lens, otherwise it will not fit.
1x ND4 Filter Lens
1x ND8 Filter Lens
1x UV Filter Lens
“AQL” stands for “Acceptance Quality Limit“, and is defined as the “quality level that is the worst tolerable” in ISO 2859-1.