The HD7100 is, despite a claim of only 1000 lumens fairly bright. Although it can't match the brightness of Optoma's own, less expensive HD72 projector, I had no trouble enjoying movies on my 128" Firehawk screen (light gray surface, slight gain). I must confess to using Bright Mode for some of the viewing, but even standard (Eco) mode it managed a satisfactory job, on a screen that large.
The next section considers a wide range of aspects of the HD7100, including menu layout, the remote control, projector screen recommendations, lamp life, brightness, settings and calibrations. Click on General Performance, to proceed.