Golden cut viewfinder: Photographers and artists know that one of the best ways to design a picture is to apply the "rule of thirds"; this "viewfinder" is like a "notepad" that helps any artist find their work in the real world. OPTIMAL COMPOSITION AID: The viewfinder of the golden ratio, a top-notch tool that helps artists create visually appealing images according to the principles of the golden ratio. DURABLE CONSTRUCTION: Made from clear 2mm thick acrylic cardboard, they are waterproof and virtually unbreakable. Plus, they are the size of a credit card and fit easily into any handbag, camera bag or artist bag. SUITABLE FOR ALL ARTISTS: Whether you're a photographer capturing the moment, a sketchmaker exploring his creativity or an air painter immersing in the landscape, this viewfinder is an indispensable companion to find the perfect composition. Easy to Use: Our design has a dot in the middle of the frame, so you can quickly find the center of each composition. The edge area has been specially designed with a 3:2 aspect ratio so you can compose your photos perfectly.