16 April 2013 by Shifali Rao
Contrast ratio is the difference between the richest black and the brightest white your projector can display which essentially decides how much detail it can give.
However it isn't always advisable to weigh contrast ratios while comparing two projectors because manufacturers make use various methods in their calculation, which are as good as comparing apples to oranges. So if you see a 500:1 on projector A and 1000: 1 on projector B, it doesn't necessarily mean B has greater contrast than A. Here's why..
Currently there's two different methods to measure contrast ratios of a projector:Full on/Full off and ANSI contrast ratios which are not comparable to each other. ANSI contrast ratio is what we recommend you to go by. This is measured with a checkerboard of 8 black and 8 white rectangles and the contrast is obtained by measuring and weighing the average light output of all the white checks against the average light output of all the black ones. Furthermore, ANSI values give you a more realistic contrast since it includes some margin for ambient light; as opposed to Full on/ Full off which provides a more idealistic ratio which can hardly be applicable to a realistic setting. So if you're looking for 1000:1 on your projector box, ascertain that it is the ANSI value.
Our selection of the best projectors is narrowed down to the top rated projectors which have a contrast ratio of 1000:1. This ratio is great for medium to bright rooms in offices and classrooms where presentations are conducted; as long as your presentation doesn't involve highly detailed illustrations.