A standard in resolution charts, the Putora 7A9 is a great addition to a cinematographers kit. Use for testing format, stock and lens resolution, registration and critical focus. Resolution targets range from 1 to 9; 10 to 97 lines per millimeter when set up at a standard distance of 60x the focal length of the lens being used. When the resolution of a given target exceeds the test format it becomes invisible against the background. Comprehensive instructions included. |