First, in " best" mode, with the HC5000BL projector in full (Standard) power, Cinema (gamma), and Color Temp set based on my calibration (see calibration section), the HC5000BL measured a very reasonable 480 lumens. Dropping to low power, brightness decreased by approximately 23% to 371 lumens. Note, dropping the power to low had a significant effect on the color balance (temp), which I will go into later.
The Video setting produced just a handful more lumens than the Cinema setting.
In brightest mode - set at Full power, Gamma = Sports, and Temp = High Brightness, the HC5000BL cranked out 886 lumens. Not bad, but it pales by comparison to the lower resolution Panasonic PT-AX100U, which cranked out a full 2000 lumens. In fairness, most home theater projectors have similar brightness to the Mitsubishi, except for that new Panny, the Optoma HD72, and a couple of others - the "light canons".