Additional Brightness Measurements:
a. When the zoom lens was set to maximum zoom the lumens output in Max. Bright mode increased by 3.7%
b. The lumens value shown in he table for Theater mode was with the default "Normal" color balance setting. When is was changed to "Warm" the white lumens decreased to 959.
c. Color lumens when the projector was operating in Max. Bright mode measured 68% of the white lumens value reported in the table
d. Brightness uniformity was good with max. 14% brightness drop-off between the center of the image and any of the corners.
The EcoLite XJ-V1 is rated by Casio to provide 2700 lumens in its brightest mode. The most lumens I could get was with the zoom set to its max. value and with the contrast adjustment set to the factory default value of zero (0). With these settings I measured about 2400 lumens for the maximum brightness. The unit reviewed as a pre-production model and it's possible that the production units may be somewhat different in terms of image brightness.
Unlike other projectors that I have reviewed, the preset color modes can only be used with the Eco power setting turned on. This operates the light source at lower power. When Eco power mode is turned off there are two higher brightness modes available that Casio simply labels (in the menu) as normal and bright. For this review I am calling these two non-Eco modes Bright Color and Max. Bright respectively.
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The on/off native contrast ratio measured 2752:1 in the max. bright mode and 1333:1 in the preset Theater Color mode. These values are 2 to 8 times better than for a typical 3LCD classroom or business projector and are perhaps a little above average for this class of DLP projector. When viewing projected images in an environment with moderate, or brighter, room lighting you would probably not notice any advantage for this DLP model over a competing 3LCD projector. However, when used in a dark environment, with very good ambient light control, the images from the XJ-V1 will have darker blacks and the image will have more 'pop'.
Casio spec's the XJ-V1 to have an on/off contrast ratio of 20,000:1, but as I have noted in other projector reviews, such manufacture's rating for contrast ratio are of little value. This is because they frequently use a measurement of the black level when the projector has activated a dimming function for the light source and that dimming is not being controlled fast enough to improve the black level while actually displaying video or presentations.