The Heliopan 49mm Sand (Soft) Spot Filter offers you the opportunity to make a standard portrait into something more endearing and meaningful. This filter is only sharp in the center part of the image. The rest is soft/blurred heading out towards the edge thereby creating a kind of "aura" around your subject. The circular center of the shot draws the attention of the viewer while the softened surroundings create a mood of serenity. It must be noted that the degree of the blurred effect varies with lens focal length and aperture opening.