Golden Ratio Viewfinder: Photographers and artists know that one of the best ways to create any image is to use the "Rule of Thirds"; this "viewfinder" is like a "memo sheet" that helps any The "viewfinder" is like a "memo pad" that helps any artist find work in the real world. Optimal Composition Aid: The Golden Ratio Viewfinder, a premier tool designed to help artists create visually appealing images using the principles of the Golden Ratio. Durable Construction: Made of clear 2mm acrylic card, they are waterproof and virtually unbreakable. They are also the size of a credit card and can easily fit in any purse, camera bag or artist's bag. Suitable for All Artists: Whether you're a photographer capturing the moment, a sketch artist exploring creativity, or an air painter immersed in the outdoor landscape, this viewfinder is an essential companion for finding the perfect composition. Easy To Use: Easily centre your image, our design has a point in the middle of the frame so you can quickly find the centre of any composition. The border area is specifically designed with a 3:2 aspect ratio to help you perfectly compose your photos.