I also measured the effect of the projector’s Energy Saving setting. The table shows the lumens output in the full power mode (i.e, minimum energy saving). Going to the middle power mode reduces the image brightness by about 10% and the lowest power mode (i.e., maximum energy savings) reduces the image brightness by about 33%.
With the projector sitting level on a table and projecting a 78″ wide image, I measured the brightness uniformity and found the top corners were the dimmest with about a 23% drop in brightness as compared to the peak image brightness value that I had measured near the center of the image.
I observed very good color uniformity when projecting a full white test image.
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LED based projectors generally have an easier time than lamp based models at producing images with deep color saturations (i.e., a wide color gamut). LG's on-line product page for the PW800 claims the projector has 114% color gamut. I did a quick measurement of the color gamut of the PW800 when operating in Cinema mode and it produced the results shown in the following figure.
I was able to confirm that primary color points (RGB) were beyond the HDTV, Rec. 709, standard saturation levels.
LG does not specify how much noise is produced by the PW800’s cooling fan. Even when operated in the brightness mode, I found the audible noise level produced by the projector to be only moderate and very quiet in the lower power modes.