LEE Filters 100mm System 4.5 ProGlass IRND 15-Stop Neutral Density Filter

The LEE Filters 100mm System 4.5 ProGlass IRND Neutral Density Filter is a high-performance optical filter designed for professional photographers and videographers. It provides a substantial 15 stops of light reduction (ND 4.5), enabling creative control over exposure in bright conditions. This allows for dramatically extended shutter speeds to capture motion blur in waterfalls, clouds, or urban scenes, or permits the use of wider apertures for shallow depth of field even in daylight. Constructed from premium optical glass, the ProGlass IRND filter is engineered to be remarkably neutral, delivering virtually no colour shift and extremely accurate stop values. A key feature is its dual-blocking capability, which filters out both infrared and ultraviolet light pollution. This prevents the unwanted colour casts—particularly the red/magenta tint common with strong ND filters—that can compromise image quality, ensuring crisp, vibrant, and true-to-life colours in long exposures. The filter is part of LEE's 100mm resin filter system, requiring a compatible holder for use with lenses of various diameters. This filter is ideally suited for landscape, architectural, and fine art photographers who require the highest optical quality for long-exposure work. It enables the creation of ethereal, smoothed-out water effects, streaked cloud movement, and the elimination of distracting elements from busy scenes. By maintaining colour neutrality and blocking IR/UV pollution, it delivers professional results straight out of camera, reducing post-processing time. Its robust glass construction ensures durability for regular use in various outdoor conditions.