M-Series | 37mm ND Filter, ND 4

Moment M-Series 37mm ND 4 Filter — the light touch for golden-hour travel footage

The gist: A 2-stop neutral density filter for travelers who want smoother, slightly slower-shutter motion in footage shot during overcast skies or the soft light around sunrise and sunset.

• 2-stop light reduction: ND4 cuts the mildest amount of light in Moment's lineup — enough to avoid the choppy, over-sharp look of unfiltered phone video without darkening the frame too much.
• Dual-layer cinema glass: precision-aligned glass built to cut light evenly across the frame rather than introducing color cast or vignetting.
• Scratch-resistant, hydrophobic coating: holds up to sea spray, humidity, and being tossed in a daypack between shooting locations.
• Fits Moment's 37mm Filter Mount: works on phone or on cameras with a standard 37mm filter thread, so one filter can serve both a phone rig and a compact camera.

Shotkit's hands-on review of Moment's smartphone filter lineup praised the ND filters for cutting light "without spoiling image quality" and called out the freely rotating ring as easy to use without accidentally unscrewing mid-shoot.

Best for: golden-hour or overcast filming where you want subtle motion smoothing, not a dramatic light cut. Skip it if: you're shooting in bright midday sun — go with a stronger ND32 or ND64 instead. Runs ~$15 — check the current price before buying.