SmallRig 52mm Magnetic Variable ND Filter ND2-ND32 - Magnetic VND

In this review the SmallRig 52mm Magnetic Variable ND Filter ND2-ND32 is evaluated for mobile and compact camera users who want quick, reliable exposure control without swapping multiple filters. The single biggest reason to consider it is the magnetic, quick-attach design combined with a true variable ND range from ND2 to ND32 that covers 1 to 5 stops, making it practical for smoothing water, controlling motion blur in traffic scenes, and shortening shutter speeds while keeping color accuracy.

Key Features

• Variable Density: Rotates between ND2 and ND32 to provide five stops of exposure control, which helps balance shutter speed for motion effects like waterfalls and traffic.
• Magnetic Design: Attaches and detaches using enhanced magnets to reduce thread wear and let photographers switch filters quickly in the field.
• No X Cross: Built with a hard stop at ND2 and ND32 to avoid the X cross darkening that can appear on wide-angle shots, giving cleaner wide shots.
• Imported HD Optical Glass: Uses premium AGC optical glass and a true color film to increase light transmittance and minimize color shift for accurate tones.
• Durable Coatings: Double-sided nano coatings make the surface waterproof, stain-resistant, oil-proof, and scratch-resistant for easier handling outdoors.
• Aluminum Alloy Frame: CNC-machined frame with a larger diameter design reduces the risk of vignetting on wider lenses and includes density markers for easier adjustment.

Who It's For

This filter is aimed at smartphone filmmakers and compact camera shooters who use a SmallRig magnetic filter ring and need fast, on-the-fly exposure control for handheld or rigged setups. The magnetic mounting suits creators who swap filters frequently during shoots and prefer a low-friction solution that preserves lens threads.

It is not intended for users who do not own the compatible SmallRig magnetic filter ring (recommended ID 3840C or 3845B) or for those who expect compatibility with other magnetic rings or standard threaded adapters. Professionals needing larger format glass or specialized cinematography filters should look elsewhere.

Pros & Cons

Pros

• Magnetic quick-attach saves time and reduces wear on lens threads for frequent filter changes.
• Variable ND range ND2 to ND32 provides flexible exposure control across five stops for motion and long-exposure effects.
• High-quality AGC optical glass and true color film limit color shift for accurate results.
• Durable nano coatings add water, oil, and scratch resistance for outdoor use.

Cons

• Compatibility is limited to SmallRig magnetic filter rings (recommended IDs provided) and will not work with other magnetic rings or adapters.
• Some users report mixed feedback on adjustment smoothness and long-term durability, so handle carefully.

Specifications

Our Verdict

The SmallRig 52mm Magnetic Variable ND is a practical, well-made option for creators using SmallRig magnetic rings who need fast exposure control and clean wide-angle results. Its magnetic mount and quality glass make it good value for mobile filmmakers and compact camera users, provided they accept the required ring compatibility limitation.

Frequently Asked Questions

Will this fit my phone rig?
It fits when used with a compatible SmallRig magnetic filter ring (recommend ID 3840C or 3845B); it will not work with other magnetic rings or threaded adapters.

Does it cause color shift?
The filter uses AGC optical glass and a true color film designed for ultra-low color shift and accurate color rendition.

Is the surface durable in outdoor use?
The filter has multi-layer double-sided nano coatings that are waterproof, stain-resistant, oil-proof, and scratch-resistant for improved outdoor durability.