SmallRig CPL & VND 3-5 Filter for DJI Osmo Action 4

SmallRig CPL & VND 3-5 Filter for DJI Osmo Action 4

The SmallRig CPL & VND 3-5 Filter set is a combination circular polariser and variable neutral density filter designed for the DJI Osmo Action 4. It attaches directly to the camera's lens thread, giving videographers two essential optical tools in one compact unit.

• CPL filter cuts glare and reflections from non-metallic surfaces, boosting colour saturation and contrast in outdoor footage
• VND filter provides smooth, continuous exposure control across a wide range of lighting conditions without shifting the white balance
• 3-5 mm filter thread fits the DJI Osmo Action 4 lens housing securely and stays in place during movement
• Lightweight aluminium housing adds minimal weight to the action camera setup, keeping the rig balanced for handheld or mounted shooting

What sets the SmallRig CPL & VND 3-5 Filter apart

Unlike separate screw-on filters that require swapping, this combined CPL + VND unit lets the operator switch between polarisation and density adjustment without removing the filter from the lens. The precision-ground optical glass maintains sharpness across the frame, and the anti-reflective coating reduces flare when shooting into bright light sources.

Ideal for

Action-camera videographers working in bright or high-contrast environments — outdoor sports, travel documentaries, and run-and-gun journalism — where rapid exposure changes and reflective surfaces are the norm. The VND range is especially useful when the camera is mounted on a gimbal or rig and stopping down is not an option.

Application of the SmallRig CPL & VND 3-5 Filter

1. Screw the filter onto the DJI Osmo Action 4 lens thread before starting the shoot
2. Rotate the CPL ring to eliminate reflections and enhance sky or water colour
3. Adjust the VND ring to dial in the desired exposure reduction without moving the camera
4. Remove the filter after the shoot and store it in the included protective pouch to keep the glass surfaces clean