SIMMOD 77mm Variable Neutral Density 0.4 – 1.8 Filter w/ Case

The SIMMOD Lens 77mm Self-Locking Variable Neutral Density 0.4 to 1.8 Filter is designed to mount onto lenses with 77mm front filter threads and provides an exposure reduction of 1.3 to 6 stops. The 0.4 to 1.8 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required.