Material: ABS Quantity: 1 piece Color: Gray Sliding Mechanism: This viewfinder is simple, practical and easy to use; it features a sliding mechanism that you can adjust to your personal preferences, such as 8x10, 8x12, 9x12, 11x14, 8x12; this makes it perfect for composing in different formats. Helps with Color Isolation: This view finder has a small hole in the middle of the sliding part, which simplifies the process of comparing the brightness with the gray part of the scene, greatly helping the painter to capture the correct brightness in the painting. Durable ABS Material: This view finder for artists is made of high-quality ABS plastic, which will not be damaged or deformed even in rainy or snowy weather. This makes it ideal for outdoor painting in various weather conditions. Improves Skills: The custom viewfinder helps users practice and perfect composition skills even when the camera is not at hand. It helps to better present the picture, thereby improving your photography skills because you can practice observing the image before actually shooting it. VERSATILE: In addition to its primary function as a framing tool, the viewfinder for artists can also be used for a variety of purposes; as a viewfinder and color separator, suitable for professionals, amateurs and students for painting, sketching, photography, patchwork, interior design, landscaping, craft projects and anywhere else composition is needed.