BenQ claims 3,300 lumens for the EW800ST. Its brightest mode, Bright, beat its claim by a long shot! That mode measured 4,445 with the lamp at full power. This mode, not surprisingly, has strong greens and yellows, however, so it is not recommended for use unless the ambient light in the room is uncontrollable. For most rooms, any of the other modes will do just fine.
On the previous page, I had rated Presentation Mode as the best mode for presentations in ambient light conditions, but as you see in the chart here, it measured a handful of lumens less than Infographic Mode, at 2,611 lumens. Presentation mode is more saturated, and appears brighter, even though it is not. Infographic Mode is the best mode for presentations in terms of color, and is plenty bright in the face of ambient light, as you will see in the photos within the next section. That mode measured 2,695 lumens.