Contrast ratio

Contrast ratio is the extent to which measures the comparison of the black and white in a projector, with forming this relationship is bigger Blacks will be better. It is the difference in light intensity between the brightest white and the darkest black that a display device can produce. A high contrast ratio is better than a lower ratio.

Projector for presentations with ambient light conditions in an office, a ratio of 500:1 is sufficient, while for a projector for home theater that is recommended is 1500:1 onwards. This is a bit of light there is no difference between a contrast of 500:1 and one of 5000:1.