What is contrast ratio?
Contrast ratio is the property of display systems. It is the ratio of the luminance of the brightest color to the darkest color. A higher contrast ratio is always favorable. There is no official standard to calculate the constant ratio.
What are the ways to measure contrast ratio?
In most of the devices, the full-on/full of the method is used. It cancels out the effect of the room and results in the ideal contrast ratio. ANSI method can also be used to measure constant ratio. Full-on/full off method measures dynamic constant ratio and ANSI contrast measures static contrast ratio.