Urth 39mm ND64-1000 Variable ND Lens Filter (Plus+) - 6-10 Stop Range

ND64-1000 refers to the filter's light reduction capability. ND64 represents 6 stops of light reduction, and ND1000 represents 10 stops. The 'variable' aspect means it can be adjusted anywhere within this range.

The 'X-effect' is an undesirable darkening or color cast that can appear in the center of an image, often when using variable ND filters with extremely wide-angle lenses at certain settings.

Use a soft lens brush to remove loose dust. Then, use a lens cleaning solution and a microfiber lens cloth to gently wipe the glass. Avoid using abrasive materials or excessive pressure.

While it reduces light, variable ND filters are generally not ideal for astrophotography due to potential image degradation and color shifts at extreme settings. Dedicated filters are usually preferred for this purpose.

Urth filters come with a lifetime quality guarantee.

Yes, this filter is excellent for long exposures, allowing you to use slower shutter speeds in bright conditions to achieve desired motion blur effects.

Check the number printed on the front of your lens, usually near the focal length (e.g., 'ø 39mm'). This number indicates the filter thread size.

This can occur with wider lenses above f/9. Try adjusting the filter to a lower stop setting or using a different lens. Ensure the filter rings are properly aligned.

Check that you are using the correct filter size for your lens. Ensure the lens threads are clean and free of debris. Do not force the filter; it should screw on smoothly.

Ensure the filter is set to the correct stop range. Remember that the effective stop reduction can vary slightly based on lens and lighting conditions. Adjust your camera's ISO and aperture accordingly.