The LEE Filters SW150 Big Stopper 150x150mm is a 10-stop neutral density filter designed for long-exposure photography with ultra-wide and specialty lenses using the SW150 filter system. It reduces light transmission without affecting color balance, enabling smooth water, streaking clouds, and motion blur effects in bright conditions.

Constructed from high-quality optical glass with a precision neutral density coating, the filter delivers consistent image quality and accurate color reproduction. It is well suited for landscape, architectural, and fine art photographers seeking creative long-exposure results with compatible SW150 filter holders.