With the COKIN Ring Filters (Center Spot), the main subjects retain their clarity while the edges become more diffused. This allows you to draw attention to the subject and highlight it, progressively blurring the foreground and background, surrounding your images with a colored glow that harmonizes with the chosen theme and atmosphere, and decentralizing the main subject to create a sense of asymmetry. This way, you can isolate your model in a group shot. The COKIN Center Spot filters are primarily used for portraits and still lifes, but they are also suitable for landscape photography, architecture, or sports when you want to focus attention on a main subject: flower beds, gargoyles, statues, details of a building, trim of a car, steering wheel. They are useful as colorless or colored diffusion masks when the surroundings do not match the harmony of the desired composition. For focal lengths between 21 and 35 mm.