Designed and manufactured by Duclos Lenses, our Standard Distortion Chart is a simple tool for cinematographers and VFX specialists to collaborate with. It's an indispensable tool used by professionals and rental houses around the world. Fully functional for observing and recording distortion of spherical and anamorphic lenses alike. In a typical checkerboard layout, each square is precisely 1" x 1". Useful for evaluating barrel and pincushion as well as variations in anamorphic squeeze rations throughout the image field. Duclos Lenses offers custom branding on their made-to-order focus charts, available in a variety of sizes and media.