Multi - ratio Composition: The viewfinder includes 3 kinds ratio golden triangle of 16:9 4:3 and 3:2. Made of clear acrylic material precisely dividing the frame. It helps photographers and painters quickly lock in the ideal composition adapts to various scenarios such as landscapes and portraits and enhances the structural beauty of the works Portable Size: Each view finder is approximately 8cm in length 5cm in width and 0.2cm in thickness. It is as small as a card and can be easily stored in a wallet or camera bag. You can take it out at any time during outdoor shooting or sketching never missing a moment of inspiration Reliable Material: The Composition tool is made of highly transparent acrylic with excellent light transmittance which does not affect visual judgment. The printed lines are clear and durable. With a waterproof material it can be stably used in complex environments such as rain and snow providing reliable tool support for long - term creation Precautions: To protect the product from abrasion and scratches during transportation there will be a protective film on the surface of the product. After you receive the product please tear off the film before using it Creative Aesthetic Gift: These view finder tools come in 3 colors - pink yellow and blue combining practicality and good looks. Giving it to friends who love photography and painting can help them break through the composition bottleneck. As an art learning tool it can also help beginners quickly master the golden ratio and start the journey of creative improvement