Urth Variable ND Lens Filter - 39mm ND2-32

ND2-32 indicates the range of light reduction the filter provides. ND2 reduces light by 1 f-stop, and ND32 reduces light by 5 f-stops. The numbers represent the factor by which the light is reduced (e.g., ND2 means 1/2 the light, ND32 means 1/32 the light).

Yes, this filter is excellent for video recording. It allows you to maintain your desired shutter speed for smooth motion (e.g., 1/50s for 24fps) while controlling exposure in varying light conditions.

Use a soft lens brush to remove loose dust. For smudges, apply a small amount of lens cleaning solution to a microfiber lens cloth and gently wipe the glass in a circular motion from the center outwards. Never spray solution directly onto the filter.

No, this filter is specifically for lenses with a 39mm thread. You would need a step-up ring (e.g., 39mm to 40.5mm) to use this filter on a 40.5mm lens, or purchase the filter in the correct size.

The Plus+ version typically features enhanced coatings for better color neutrality, increased scratch resistance, and improved light transmission compared to standard filters, minimizing potential image degradation.

You can stack filters, but it is generally not recommended with variable ND filters as it can increase the risk of vignetting, color casts, and the 'X' pattern. If stacking is necessary, it's best to use a lower ND setting on the variable filter.

This can occur at the higher end of the ND range. Rotate the filter ring to find a setting where the 'X' disappears. This is a limitation of variable ND filters. Consider a fixed ND filter if this is a persistent issue.

Variable ND filters can sometimes introduce a color cast. This is usually correctable in your photo or video editing software's white balance or color correction tools. Ensure the filter is clean and properly seated.

Ensure you are using the correct filter size (39mm) and that the lens threads are clean. Gently align the filter with the lens threads and turn slowly. Do not force it.

Vignetting can occur, especially at wider focal lengths or higher ND settings. Try using a wider aperture or slightly zooming in. For wider lenses, consider using a step-down ring and a smaller filter, or a wider lens itself if possible.