With Sliding Mechanism: The viewfinder is a simple and easy tool to use; it has a sliding mechanism that you can adjust to your personal preferences, such as 8x10, 8x12, 9x12, 11x14, 8x12; perfect for views in different formats. Assists with Color Isolation: The View Finder Artist Painting Tool has a small hole in the middle of the sliding portion, which simplifies the process of comparing values to the gray portion of the scene, greatly helping the painter capture the correct values in his painting ABS Durable Material: The Artist's View Finder is made of high-quality ABS plastic, which will not damage or deform even when it rains or snows; this makes it perfect for those who paint outdoors in all kinds of weather conditions Enhance Skills: The Artist's View Finder helps users practice and perfect their compositional skills even when their camera is not at hand; it helps to better visualize the frame, thereby improving your photography skills, as you practice viewing the image before actually capturing it Versatile: In addition to its primary function as a framing tool, the View Finder can be applied in a variety of ways; as a viewfinder and color isolator, it is suitable for professionals, amateurs and students for painting, drawing, photography, quilting,interior design, landscape, craft projects and anywhere else composition is needed