Contrast Ratio
What is Dynamic Contrast Ratio?
Those of us that were children back in the dark ages of black and white television (or even colour cathode ray sets) might remember fiddling with the contrast knob on the front of the television to completely grey out the actors at one end of the knob’s reach, and turn them into eyeball-straining black and white monsters at the other end. If you remember that, then you’ve been learning about contrast ratio since you were knee high to a grasshopper! Most of this television features guide will feel like second nature to you.
What is contrast ratio?
On LCD televisions, cathode ray televisions, computer monitors, and any electronic display, contrast ratio measures the difference between the whitest white and the blackest black the display can handle. In technical terms, Cnet describes it as “the ratio of the light level (luminance) the display produces when fed a white signal to the luminance when it’s fed a black signal”. The luminance is measured in candela per square metre (cd/m2). The full on/full off approach to measurement of static or dynamic contrast ratio is usually used, with an all-white screen compared to an all-black screen.