The Sony VPL-EX175 is rated at 3600 lumens. We are most pleased to report something not all that common: This EX175 measured brighter than claimed.
In measuring the VPL-EX175, measurements were taken with the contrast at default (80), but also again, at 90 and 100. Those settings developed even more lumens, although at 100, the image is definitely being pushed, with all near whites being crushed. Still, it kept getting brighter. This is a powerful projector that can crank out some extra when you really need it.
Also of note, are three brightness levels, instead of the usual Normal and Eco. The brightest - claims 3600 lumens and 3000 hours of lamp life. Medium increases lamp life to 4500 hours, and Low, all the way to 6000 hours. Essentially, Sony is milking a lot of lumens out of a 210 watt lamp. That should make almost all the DLP projectors jealous.
After measuring Presentation (the brightest mode) at all three lamp levels, we concluded that Low is approximately 42% less bright than High. Medium is 23% less bright than High.