Urth ND4 (2 Stop) Lens Filter - 40.5mm
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Product Information
Full details
The Urth ND4 (2-Stop) Lens Filter is designed for landscape photographers and cinematic videographers who require precise light management to achieve creative motion blur or shallower depth of field in moderately bright conditions. By reducing light intake by exactly 2 stops, it enables wider apertures and longer shutter speeds, though users should note that its fixed density makes it less versatile than variable ND alternatives in rapidly changing lighting scenarios.
All features
| Brand | Urth |
|---|
Extended Product Information
FAQs
Does this filter affect image color?
No, the high-quality SCHOTT glass and multi-coating are designed to maintain color neutrality.
Can I attach my lens cap over this filter?
Yes, the filter is designed with front threading that allows for the attachment of standard lens caps.
Is this filter weather-sealed?
The nano-coating provides water-repellent properties, making it easier to wipe away moisture and dirt.
Will this filter work with a telephoto lens?
Yes, as long as the filter thread diameter matches the lens, it will work regardless of focal length.
Can I stack this with a circular polarizer?
While physically possible, stacking filters increases the risk of vignetting and potential reduction in image quality.
Troubleshooting
Filter is stuck on the lens
Use a specialized rubber filter wrench to apply even pressure to the frame and unscrew it without putting pressure on the glass.
Visible vignetting at the corners of the frame
Ensure the filter is screwed on completely straight and check that you are not stacking it with another filter or a thick lens hood.
Pros and Cons
Pros
- High-quality SCHOTT glass maintains image sharpness
- Nano-coating makes cleaning fingerprints and dust easy
- Ultra-slim frame prevents vignetting on wide-angle setups
- Reduces exposure perfectly for bright daylight portraits at wide apertures
Cons
- Fixed density means you cannot adjust the stop reduction
- Requires different sizes for lenses with varying filter threads
- Cannot be used as a substitute for stronger ND filters in extremely bright sun
Setup, Compatibility & Care
To install, ensure your lens front element is clean, then screw the filter clockwise into the lens's front filter thread until it is snug but not overtightened. The 40.5mm size must match your lens filter thread exactly or be adapted using a step-up ring. When not in use, store the filter in its protective case to prevent scratching. To clean, use a high-quality microfiber cloth and a dedicated optical cleaning solution; the 20-layer nano-coating is durable, but abrasive materials should be avoided to preserve the anti-reflective properties.