Contrast Ratio is the ratio of the whitest white to the blackest black possible at any given time. Dynamic Contrast adjusts black levels based on screen content delivering superior front-of-screen performance. ViewSonic projectors with dynamic contrast allow darker black levels and the significant reduction of light leakage on darker screens. Through the intelligent modulation of lighting control, the user experiences deeper black levels while viewing darker scenes. ViewSonic projectors offer up to 3500:1 Dynamic Contrast Ratios.