Designed with filmmakers in mind, this Black Glimmerglass Diffusion Filter from Tiffen features a density of 1 for a moderate effect. It is designed to subtly soften the image and lower detail resolution, being often sought after by videographers who want to simulate the look of film footage while shooting on digital gear. The filter is made of water white glass. This black Glimmerglass model gives a muted, washed out look to bright colors and reduces contrast due to its white halation effect. It can smooth out unwanted blemishes, wrinkles, or other fine details in a subject's face while keeping the general image in focus, suiting it well for portraiture work. Manufactured using ColorCore technology, each Tiffen filter is designed to be accurate in its effect and produce consistent results. Responding to the demands of cinematographers, Tiffen's new Black Glimmerglass filters aid cinematographers in taking the hard crisp edge off the images that modern digital lenses and cameras can produce, especially with 4K sensors, and are designed to enhance the natural beauty of the shot with minimal signs of filtration. Black Glimmerglass filters offer all of the benefits of the original Glimmerglass filters, PLUS, they subtly remove harsh sharpness from modern lenses, adding a pleasing overall blending to contrast levels. Additionally, these filters maintain a clear, overall in-focus image, offering a filmic aura to digital acquisition.