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The use of Video projector in Offices, Companies and Universities are getting more and more popular. The projector which is also referred to as the 'LCD Projector' and 'VGA Projector' are getting cheaper and cheaper.

Projectors are used to show important programs and presentations. Teachers like projectors as projectors are very useful in teaching. Easy to carry portable projectors are also available in the market.

Here are the buying tips for choosing a good projector

1. There are two types of projectors based on the technology they use. The 'Liquid Crystal Display' (LCD) and the 'Digital Light Processing' (DLP) based projectors. The LCD projectors are very cheap compared to the DLP projectors
   
2. The weight of the LCD projector is very high compared to the weight of the DLP projectors. Therefore those want to carry the projectors easily then you should buy a DLP projector.
   
3. If the size of the projector is small then there will be minimum connections available in the projector. Therefore if you go for more features and do not care about the size then you should choose a bigger projector.
   
4. If you want to be able to connect VCR, VCD or camcorder to the projector then you should check whether these connectors ara available.
   
5. You should check the light brightness of the projector. This is measured in lumens. Different projectors have 1000, 1500, 2000 or 3000 lumens. If you are going to use the projector in a small room then 1000 to 1500 lumens is enough. If you are planning to use your projector in big halls, auditoriums then choose the 3000 or higher lumens projector.
   
6. Also remember that the resolution is very important. If you need sharp and clear pictures then you should choose the projector with high resolution. Projectors are available at 800x600, 1024x728, 1280x1024 resolutions. The price of the projector will increase with the increase in resolution. Also note that the computer monitor's resolution and the projector's resolution should match when you give presentations.
   
7. Also check the contrast ratio of the projector. The ratio should be high for example between 400:1 projector and 2000:1 projector the latter is better.
   
8. See if the VGA, SVideo, Composite Video connectors are available. Similarly check if the 'Audio In' connector is available.
   
9. Check the 'tilt mechanism' provided in the projector. This is used to tilt your projector, upwards or downwards based on your requirement. Usually the projector will rest on four screws which are adjustable. Some brands come with two screws behind and one screw in the center front. You can adjust these screws to adjust the projection to fit the screen.
   
10. Check the life of the 'bulb' in the projector. Check the price of the bulb in case you need to change it.
    
11. See the menu options provided in the projector and whether it is easy to operate using the remote control and whether it is easy to connect to the computer.
    
12. See if the laser pointer comes with the remote control or given separately. The laser pointer with the remote control is better.
    
13. See if the projector can be locked using a password. This is very useful if you do not want unauthorized use.
    
14. Also check if there is a 'control panel lock'. This will prevent the use of projectors without the remote control. So only those who have the remote at hand can operate it.