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The XJ-UT311WN uses Casio's LED/laser light engine, which produces red light with LEDs, blue with lasers, and green by shining blue laser light on a phosphor. The XJ-UT311WN's 3,100 lumen-rated brightness matches its predecessor, the Casio XJ-UT310WN ($1,295.00 at Amazon), and is a little short of the Epson 585W (3,300 lumens) and the XJ-UT351WN (3,500 lumens). Like the Casio XJ-UT351WN and the Epson 585W, the XJ-UT311WN ($1,309.98 at Amazon) is an ultra-short-throw projector with WXGA (1,280-by-800) native resolution. If you do need a data projector that can also show longer video clips, the Epson PowerLite 585W-an LCD projector, which is free of rainbow artifacts-is a better choice, but for most classroom uses the XJ-UT311WN is a fine choice. The XJ-UT311WN has slightly better video quality, with a less pronounced rainbow effect than the XJ-UT351WN.
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They both deliver very good data image quality, though not quite as good as the Epson PowerLite 585W WXGA 3LCD Projector, and should be able to handle most any typical presentation. The Casio XJ-UT311WN data projector ($1,500) is slightly dimmer and less expensive than the Casio XJ-UT351WN that we recently tested, and has just one HDMI port while the XJ-UT351WN has two.
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