The Irix Edge Vari ND 2 5 77mm is a high-quality screw filter specifically designed for use with lenses that have a diameter of 77 millimeters. As an ND or neutral density filter, it allows for precise control of exposure by reducing the amount of light that reaches the sensor. This is particularly useful in situations with bright light, where overexposure should be avoided. The filter offers a variable density ranging from ND 2 to ND 5, enabling flexible adjustments to different lighting conditions. Photographers can achieve creative effects, such as motion blur or creating smooth water surfaces. The Irix Edge Vari ND filter is a valuable addition to the gear of photography and video professionals who prioritize high quality and versatility.