Let's look at the idea of a projection system again. A projection system consists of three parts: the projector, the screen and the room. If we consider these three parts and establish values for them, then we can make a reasonable prediction of what our real world Contrast Ratio will be. Further, we will establish what our real world Contrast Ratio needs to be for different projection applications, based on a recent standard developed by Infocomm called PRISC or Projected Image System Contrast Ratio.
So, what are the causes of poor contrast? Contrast in a projected image can be compromised in two ways: inadequate, or elevated black levels and inadequate white levels. Today's post examines this topic.