ND Filters for Your Drone – How They Work and Which Ones to Use
What is an ND Filter?
A Neutral-Density Filter, or ND filter, reduces the amount of light that enters a camera’s lens. Under bright sunlight, an ND filter allows photographers more leeway in selecting an aperture and shutter speed by preventing overexposure.
Choosing ND Filters
DJI has three official ND filters for their drones: ND4, ND8, and ND16. The number associated with an ND filter indicates that how much light enters the lens in terms of a fraction.
- ND4 reduces light by 1/4. An ND4 filter can reduce 2 stops of light, allowing you to slow the shutter speed from 1/100s to 1/25s.
- ND8 reduces light by 1/8. An ND8 filter can reduce 3 stops of light, allowing you to slow the shutter speed from 1/200s to 1/25s.
- ND16 reduces light by 1/16. An ND16 filter can reduce 4 stops of light, allowing you to slow the shutter speed from 1/400s to 1/25s
Article Reference: https://store.dji.com/guides/drone-nd-filters-work-and-use/