JVC DLA-X95R Performance 1

Changing the position of your projector, relative to the screen, so that your zoom lens is at full wide angle (projector as close as it can get to the screen) buys you almost exactly 10% more brightness than at mid-point on the zoom (the projector about another 5 feet further back from a 100" diagonal screen). Even going all the way from wide angle to maximum distance back - telephoto, results in a drop of only about 25%.

That is truly excellent for a 2:1 zoom. Many projectors with that much zoom range see a drop of up to 40% not 25%, and on the lower end of the home theater projector spectrum, the Panasonic PT-AR100U ($1199) drops just about 50%! That's a real plus, if you want to mount in the back of your room, such as on a high shelf.

FYI:  JVC refers to full brightness as High, and their "eco-mode" as Normal brightess.

JVC DLA-X95R Brightness in eco-mode:

We measured 351lumens @ 7066 with Cinema mode, that compares to Cinema mode producing 550 lumens in High lamp.

That makes the projector about 37% less bright in Normal mode, or you could say that High lamp mode is almost 60% brighter.  Normal ("eco") is dramatically quieter than Normal, but the question is, will you have enough lumens. the 658 calibrated lumens at full power would therefore be about 420 lumens.  Of course that's still plenty for a 100" or slightly larger screen for 2D viewing.

If you don't need all the brightness, please note that the more you close down the iris of this JVC, the better the contrast. Blacks will get even blacker, both by virtue of the smaller iris opening, and also because of the reduced overall brightness. Of course, the idea is not to starve yourself of brightness, for a very minor improvement in blacks.