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Projectors

Choosing the right projector is easier than you think! There are many projectors on the market, but you can find the best solutions by thinking about the resolution, the mobility of the equipment, its weight, wheather its a digital projector or LCD and the brightness. Find out more about these in our easy guide to buying a projector detailed below.

The benefits of Digital ProjectorsDigital Projector

  • Bring your presentations to life
  • Easy to set up - virtually anywhere
  • Crisp legible text and images
  • Silent as a mouse
  • Use as a home/school theatre

 

Resolution
What resolution should it be?

  • The sharpness and detail of the picture on the screen is determined by the projectors resolution. resolution is simply the number of mirrors or pixels the machine uses to create the image. The more there are, the higher the resolution
  • Resolution is quoted by two numbers, such as 1024 x 768, where the first number refers to the number of mirrors/pixels from side to side across the screen and the second numbers refer to the numbers from top to bottom
  • SVGA - "800 x 600". SVGA is used to define a specific display resolution of 480,000 individual pixels that are used to compose the image delivered by a projector.
  • XGA - "1024 x 768". XGA is used to define a specific display resolution of 1024 horizontal pixels giving a total display resolution of 768,360 individual pixels Disital Projector

LCD v's DLP

  • There are two types of technologies available in multimedia projectors, LCD or DLP
  • LCD (Liquid Crystal Display) is the older technology which uses coloured pixels on Digital Projectorglass through which light passes to produce the image
  • DLP (Digital Light Process) is the rapidly growing digital technology, which uses reflected coloured light tilting mirrors to produce its image
  • This system offer much higher contrast ratios (2,000:1) which produce whiter whites, blacker blacks and more vibrant and vivid colours. This technology is said to have a longer life expectancy than other technologies, which in turn provides a lower cost of ownership

 

Mobility

  • Think about where you'll be taking the projector. Will you carry it back and forth between meetings? or will the projector be the stationary centrepiece of you home theatre? The more you plan to move your projector, the lighter you'll want it to be. When it comes to weight and mobility, DLP has the advantage. While LCD requires three liquid panels, DLP require one mirrored chip. As a result, DLP projectors tend to be smaller and lighter. While an average LCD projector could weight 6lbs, a DLP could weight as little as 2lbs. Thanks to their all-digital technology, DLP projectors also score high marks for durability and easy setup.

Brightness
How bright should it be?

  • Brightness for projector equipment is measured in lumens. For rooms  where there is a lot of ambient light or where the size of the projected images is large, then a greater brightness is required
  • Care should taken in choosing a machine to be used in a school classroom, where it is recommended that the maximum brightness should be 1,500 lumens. This is due to protecting  children's eyes and ensuring they don't get damaged.
  • A general rule is that the greater the brightness the larger the size of the projector.

Weight
Does it matter?

  • The weight of the projector should be taken into account if the presenter is going to move from location to location. Machines are available weighing as little as just over 1kg. The brightness is usually a factor of size and weight.

How to check your computers resolution
Windows Operating System

  1. Left mouse click on the Windows START button (mostly situated on the bottom left of your desktop on the taskbar)
  2. Now go to "settings"
  3. Click on "control panel"
  4. Click on "Display"
  5. In the Display Properties window, left click on the top right hand tab "display"
  6. Your computer's resolution will be displayed in the slide ruler entitled "Screen Area"

Projectors with:

  • 700 lumens are for smaller rooms, smaller audiences and dark or dim lighting
  • 700 to 1,600 lumens are for norm,al business-sized conference rooms or classrooms, medium-sized audiences and reduced lighting
  • 1,200 to 2,000 or more lumens are generally for large conference rooms or classrooms with normal lighting
  • 2,500 or more lumens are for large venues, including conference rooms and auditoriums with most lighting conditions

 

Projectors