What is ANSI Contrast
As mentioned ANSI contrast, is a more representative and accurate parameter for quantifying the contrast ratio, sometimes also called “checkerboard contrast”. In this method, you measure the brightest whites and darkest blacks, but in a setup that is much more representative of how the system will eventually be used in reality and perceived by the audience. The ANSI contrast measurement is also more difficult to cheat on when trying to boost the results. When measuring the ANSI contrast, the pattern on screen is not full-screen white or black, but a 4x4 checkerboard pattern consisting of 8 white and 8 black squares. The black again needs to be the same level as when showing black content: since you are at the same time displaying white squares, playing tricks by dimming the light source will not help as the bright zones will be equally impacted.