This Century Precision Optics Resolution Chart is actually four charts printed on one piece of paper yielding sixteen charts total. The Kit includes four sheets. It can be used as one chart or cut in half horizontally and vertically. A sharp lens will yield crisp distinctive lines where as a lens with aberrations or out of focus will show grey smears. Measures 8.5" x 11".
Century Precision Optics is considered a premier manufacturer of high quality lenses and well respected in the motion picture industry.
Note: This picture is rendered at 72dpi, very low resolution, so the lines do not appear to be sharp.