With Sliding Mechanism: The view finder is a simple, practical tool that is easy to use; It has a sliding mechanism that you can adjust based on your personal preferences, like 8x10, 8x12, 9x12, 11x14, 8x12; Which makes it ideal for framing a view in different formats | Helps with Color Isolation: The view finder artist drawing tool includes a small hole in the middle of the sliding part, that simplifies the process of comparing the value to the gray part of the scene, greatly assisting painters in capturing the right values in their painting | ABS Durable Material: The view finder for artists is made of High quality ABS plastic, which means it won't get damaged or warped even when it rains or snows; This makes it ideal for those who paint outdoors in various weather conditions | Enhances Skills: The Artist Viewfinder helps the user to practice and perfect their composition skill even when their camera isn't at hand; It helps visualize the frame better, thus improving your photography skills as you practice seeing images before actually taking them | Versatile: Besides its main function of being a framing tool, the View Finder can be applied in multiple ways; As a View Finder and a color isolator, for Professionals, Amateurs and Students Use for Painting, Drawing, Photography, Quilting, Interior Design, Landscaping, Craft Projects, and Any Other Place Where Composition is Required