The Tiffen 49mm Black Pro-Mist 1 Filter is a high-quality optical filter designed for use with lenses that have a 49mm diameter. This filter helps to soften highlights and reduce the appearance of fine details, giving your images a dreamy, ethereal quality. It is perfect for portrait photography, cinematography, and any other type of creative work where you want to add a touch of softness to your images. The Tiffen 49mm Black Pro-Mist 1 Filter is a must-have accessory for photographers and filmmakers looking to add a unique and artistic touch to their work.