InFocus specifically lists this product as a meeting room projector. It has a reasonably high lumens rating of 2200 but a low contrast ratio of only 400:1. Don't let this low contrast ratio deter you though because the actual contrast we saw was quite good.
The LP640 has an easy-to-use set of control buttons and an LCD which can give you some meaningful information on the status of the projector. The focus and zoom can be easily adjusted through ring dials -- normally we don't like ring dials but these are wide and offer good grip.
The menu itself is very easy to use. It has a lamp-hours counter but unfortunately offers no option to run the projector in an economy mode.
It also comes with wired network capabilities. On the back all of the standard connectors are there, including DVI, but no component video.
This projector was the quietest tested, recording less than 50db. It has a quick warm up time but the cool down time took a longer than most. This is probably because it runs so hot -- the air coming out of the main fan grill was 70 degrees at one stage. While the projector is cooling down it displays how much longer it needs to continue cooling before you can unplug it -- a very handy feature. It also displays how long before it can fire up an image on the screen.
Picture quality was very good in our tests and the LP640 is up there as one of the sharper projectors of the group. Its contrast was good and our only real complaint isthat we noticed some blue shadowing around white text and there was a noticeable fly screen effect -- even from a distance.
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Lamp doesn't last long enough for the price.
There isn't enough IR ports.All ok if you don't mount it but once mounted IR ports just not good enough