SLIDING MECHANISM: The viewfinder is a simple and practical tool that is easy to use. It has a sliding mechanism that you can adjust to your preferences, such as 8x10, 8x12, 9x12, 11x14, 8x13, which makes it ideal for building views in different formats. | COLOR ISOLATION: A small hole in the middle of the sliding section simplifies the process of comparing values to the gray portion of the scene, greatly assisting the artist in catching the correct values in the painting. | ABS MATERIAL: Made of premium ABS plastic, not easily damaged or warped, which makes it ideal for those who paint outdoors in all weather conditions. | ENHANCE YOUR SKILLS: Viewfinder helps users practice and refine their composition skills. Even if their camera is not at hand, it helps to visualize the picture better, thus improving your photography skills. | MULTIFUNCTIONAL: It can be used as a viewfinder and color isolator for professionals, hobbyists, and students for painting, sketching, photography, quilting, interior design, landscaping, craft projects, and anywhere else composition is needed.