A very likely scenario a consumer might face is that Projector A may advertise a brightness value of 1,000 ANSI lumens, while the comparably-priced Projector B lists their brightness value at 2,400 LED lumens. Should a value so drastically higher than all the others, such as the one for Projector B, be trusted? What is the difference between the various lumens units, such as the ones used in our example (ANSI and LED)? How do each of these units stack up against each other, and is there a preferred unit to use? This article will seek to address each of these concerns so that you can have a better understanding of how different projectors market their brightness levels and thus make a more educated decision.