Designed and manufactured by Duclos Lenses, our Distortion Chart 2.40:1 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 of the field squares is precisely 2" x 2" with the center box squares in a 1" x 1" configuration. Useful for evaluating barrel and pincushion as well as variations in anamorphic squeeze rations throughout the image field. Printed in-house onto ultra-bright enhanced matte paper with our unique rich-black technique for excellent contrast and resolution.