Tiffen 4 x 5.65" Glimmerglass 1/4 Filter is a diffusion filter from Tiffen's professional cinema line, designed for use with professional cameras. It softens contrast, reduces the appearance of skin imperfections and wrinkles, while creating a characteristic soft glow in the bright areas of the frame. The matte glass size is 4 x 5.65 inches. The effect strength is 1/4 (quarter), providing moderate impact on the image. Manufactured by Tiffen, a leading producer of optical filters for cinema and photography.