BGNing Camera Filter Lenses ND2-400 Neutral Density Fader Variable ND Filters Adjustable For Canon For Nikon 40.5mm

Size: 40.5mm

Material: Aluminum alloy

Lens material: Optical glass

 Feature:

Aluminum alloy mirror ring, matte surface, no reflection.

The basic function of an ND filter is to reduce the amount of light entering the lens, thereby increasing the exposure time.

In some scenes that are too bright, even using the fastest shutter and the smallest aperture will still cause overexposure, if the ND filter is properly used You can get normal exposure.

This product can adjust ND2-400 which is a stepless adjustment that controls the light flux in 1 to 9 steps, blocking the light evenly.