Urth 40.5mm Circular Variable ND8-128 3 to 7-Stop Lens Filter Plus+

40.5mm Variable ND8-128 Filter

The Urth 40.5mm Circular Variable ND8-128 Plus+ filter provides 3 to 7 stops of light reduction for photographers and videographers who need flexible exposure control in changing light conditions. It uses German SCHOTT B270 glass with 20 layers of nano-coating for high transmission and easy cleaning. The ultra-slim, double-threaded rim prevents vignetting on wide-angle lenses and allows stacking or lens cap attachment.

Suited for variable light shooting

This filter suits creators who want a single filter to handle low to bright light without swapping fixed ND filters. Videographers gain smooth shutter control for cinematic motion blur, while stills shooters can open apertures for shallow depth of field. It is not for users who need density beyond 7 stops, such as for solar photography or extreme long exposures in harsh midday sun. Buyers requiring a hard stop at each density mark should note this is a continuously variable design.

Check thread size and rim clearance

Before ordering, verify your lens has a 40.5mm front filter thread; the size is usually marked on the barrel or under the cap. Confirm the ultra-slim rim will not interfere with your lens hood or matte box, especially on wide-angle zooms where the front element rotates or extends. Ensure you can tolerate a variable filter that may show cross-polarisation artefacts at maximum density on ultra-wide focal lengths.