1,000:1 is referring to the real contrast ratio (the difference between black and white when they are displayed at the same time on the screen). The huge numbers you are used to are dynamic contrast ratios. Dynamic contrast ratios are the difference between a completely white image displayed, and then a black image displayed afterwards on the screen.
“An engineer explained to us that hundreds of ear impressions were gathered in the name of research, and while each one obviously boasted its own unique shape and size, one single characteristic remained uniform across the board: the entrance into the ear canal is not a perfect circle, it's an oval.”
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So how good is 1000:1 contrast for a hi-def home theatre projector? shouldn't it be like 2,500 at least?
I'll admit now, I don't really know a lot about projectors so please, keep the flames down folks!
1,000:1 is referring to the real contrast ratio (the difference between black and white when they are displayed at the same time on the screen). The huge numbers you are used to are dynamic contrast ratios. Dynamic contrast ratios are the difference between a completely white image displayed, and then a black image displayed afterwards on the screen.