As you compare projectors, notice how the illumination fills the screen. You want to avoid bright centers and dark corners, or vice-versa. This criteria should be followed for both video and computer data projections. Portability LCD projectors offer a portable presentation package for highly mobile users. You'll want to make sure you use an ATA approved shipping case or a case designed for local transport, depending on your needs.
Some projectors are more portable than others.
If you are on the road quite often, you will generally want a 10 pound or less projector. If your projector will reside at one location for a majority of the time, heavier projectors are not such a hassle. The heavier projectors tend to have more features than their lighter weight cousins, so you have to be the judge when compromising weight for function. The portability of LCD projectors also makes them an excellent choice for in-house users who need to move a projector from room to room. Another example of in-house usage, is in permanent fixtures.