Post Calibration Brightness: Mike measured this Sony projector at 1584 lumens!
That's a ton of lumens for a projector in a home theater environment. Call it suitable for those large screening rooms with much bigger screens, such as 150" +. Certainly at my 124" diagonal (at 2.35:1) it's bright. Hey, it's bright in Eco mode.
That's all good, I definitely like, and prefer bright to dim.
As an added bonus, there's enough brightness to do a pretty nice job on 3D at the full 124" diagonal. You could describe 3D as actually being reasonably bright when projecting a 100" diagonal size, to a 1.1 to 1.3 gain screen.
Gamma measured at 2.27 just a touch high.
That was with Gamma turned off. Mike did not provide the actual measurement of the 2.2 gamma mode. Hey, if you don't need to engage a feature that changes the data, why add extra processing, Still, try 2.2. If it's just a touch lighter in in the brightness of the mid-bright areas, that would probably put it closer to the target 2.2.