BE AS PORTABLE AS YOU WANT.
With presentation projectors becoming more and more portable, the question is, how portable do you need it to be. Obviously, one aspect that affects portability is size. The larger the projector the somewhat less portable.
For you jetsetters out there, if you're planning to travel with your laptop and projector, the smaller the better. And if you're going to be using your projetor in a foreign environment, be sure to prepare for anything. Here's a few things to consider:
• Look for a small, lightweight projector.
• A smaller footprint means better portability.
• You'll want at least 1500 lumens for ambient light in unfamiliar environments.
• A remote with mouse control frees you from your computer.
GET TO KNOW YOUR CONNECTION TYPES.
Component video is the most common type of high-quality signal available today. While a composite cable carries the entire video signal on a single cable, component video cables split the signal in three. This connection gives a much better image than do composite or S-video connections; theproyector you buy should have at least one of these inputs.
S-Video and Composite Video
S-video cables differ from composite cables in that they split the video signal into two different components, luminance and chrominance, resulting in a significantly better image than a composite cable can provide.
Digital Visual Interface (DVI)
Digital Visual Interface (DVI) is a connection type designed specifically for high-bandwidth, all-digital signals that are anticipated to become the industry standard for HDTV set-top boxes. While DVI is relatively new, watch for more DVI-compatible projectors coming soon.
High Definition Multimedia Interface is a hi-speed Digital interface for both video and multi-channel audio that also incorporates HDCP copy protection. http://www.aliexpress.com/store/1814762/