Urth Variable ND Lens Filter

This indicates the filter's range of light reduction. It allows you to reduce incoming light by 1 to 8.66 f-stops, giving you the flexibility to shoot with wider apertures or slower shutter speeds in bright conditions without overexposing your image.

The 'X-effect' occurs when a variable ND filter is rotated beyond its optical limit. The integrated locking rim on this filter provides a physical stop, ensuring you cannot rotate the glass into the range where that unwanted cross-pattern artifact appears.

No. The filter is crafted from premium Japanese AGC glass with an 8-layer nano-coating, which is specifically designed to maintain color neutrality so your images remain true to the original scene.

Because this filter features a slightly wider outer rim to accommodate the variable mechanism, your standard 95mm lens cap may not fit directly onto the front of the filter. You may need to remove the filter to attach your lens cap or use a larger cap size.

The 8-layer nano-coating serves two main purposes: it improves light transmission for better clarity and makes the glass surface resistant to water, oil, and dust, which makes cleaning smudges or fingerprints much easier.

Urth's lifetime warranty typically covers manufacturing defects and failures under normal use. It does not cover accidental damage like drops or scratches, so you should still handle the glass with care.