40.5mm Variable ND Filter ND2-ND32 - No X Cross, Waterproof Nano

In this review of the 40.5mm Variable ND Filter ND2-ND32 the bottom line is simple: it is aimed at photographers and videographers who want a compact, well-built variable neutral density filter that reduces 1 to 5 stops of light with minimal color shift. The review finds the filter especially useful for run-and-gun video, outdoor long-exposure work, and travel photography because of its slim rim, durable aviation aluminum frame, and advanced Nano coatings that resist water, oil, and fingerprints. The key selling point is reliable neutral density control without the distracting X cross that plagues many variable ND designs.

Key Features

• Japanese AGC glass: Provides clear optical quality and reduces light intake without altering overall color balance for clean exposures.
• No X cross: Uses updated variable ND design to avoid the dark X pattern common with other filters, which improves wide-angle shooting.
• Nano coating: Multi-layer green anti-reflective coating is waterproof, scratch-resistant, and repels oil and fingerprints for easier field use.
• Ultra slim rim: Slim profile helps prevent wide-angle vignetting, keeping corners clean on small-diameter wide lenses.
• Aviation aluminum frame: Sturdy construction reduces the chance of jamming and improves longevity in rough use.

Who It's For

This filter is best for hobbyists and content creators who use lenses with a 40.5mm thread and need a compact variable ND solution for outdoor video or stills. Its light reduction range of ND2 to ND32 (1 to 5 stops) makes it useful for slowing shutter speed for motion blur or controlling exposure in bright conditions.

Those who should look elsewhere include photographers who require extremely precise color neutrality for critical studio color work and users of lenses with threads other than 40.5mm. Also, some users reported fit or hood-attachment issues, so if your workflow depends on a specific hood fit, verify compatibility before ordering.

Pros & Cons

Pros

• Well-engineered glass and coatings deliver good picture quality and generally low color cast.
• Advanced variable ND design eliminates the X cross, improving wide-angle usability.
• Durable build with aviation aluminum frame and waterproof Nano coating for field reliability.

Cons

• Some users report fit issues with lens hoods or caps; confirm your hood compatibility with a 43mm cap/hood note.
• Minor variation in perceived color cast among users; a slight green tone can appear in some setups.

Specifications

Our Verdict

The 40.5mm Variable ND Filter ND2-ND32 is a compact, value-minded option for photographers and videographers who need flexible light control and reliable field performance. With solid build quality, effective Nano coatings, and a variable design that avoids the X cross, it is a strong pick for outdoor and travel use, provided the 40.5mm thread and hood fit are confirmed.

Frequently Asked Questions

Will this fit my lens?
It fits lenses with a 40.5mm thread; check your lens barrel for the diameter symbol and number before ordering.

Does it cause the X cross on wide-angle lenses?
The filter uses a variable ND design intended to eliminate the dark X cross common to other variable filters, improving wide-angle results.

How is the coating maintained?
The Nano multi-layer coating is waterproof and repels oil and fingerprints; clean gently with a microfiber cloth and lens cleaner as needed.