1. Choose the right brightness
When screen width is doubled, the total area of the image projected is four times larger.
This means it takes four times as much light to illuminate to the same brightness.
A 1.5 metre screen is 4 times brighter than a 3 metre screen using the same projector.
For classrooms and meeting rooms, we recommend a minimum 2000-3000 lumens.
For conference rooms, we recommend a minimum 4000-5000 lumens.
2. Consider your lighting
We recommend brighter projectors and smaller screens where lighting cannot easily be dimmed.
Regardless of projector brightness, the screen should be shaded from sunlight and downlights.
3. Consider installation
Projectors should be installed perpendicular to the screen, at the correct height and distance for the projector's throw and zoom angle.
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Ideal setup
Projector is centred and perpendicular to screen and suspended at an appropriate height from ceiling for its throw angle
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Keystoned
Projector is not perpendicular to screen.
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Keystone Correction
Used to make image square (at the expense of clarity).
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Lens Shift
Allows projector to project a square image even when not installed in ideal position. Projector must still be perpendicular to wall.
Keystone Correction or Lens Shift is also used where a desktop projector is required to project upwards.
It is advisable to choose longer lamp-life for projectors installed in difficult-to-reach positions.
4. Consider your display technology
At typical school and workplace price points, LCD projectors are generally recommended.
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LCDBrighter colours in classrooms and meeting rooms than similar-price DLP projectors.
No flickering or rainbow effect. Projectors feature lamps and sometimes air filters which require occasional replacement. |
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DLPTypically muted colours in classrooms and meeting rooms and boosted white brightness.
Flickering or rainbow effect may be apparent with high contrast moving images. Projectors feature lamps and sometimes filters which require occasional replacement. |
OtherLaser - uses a laser or laser+LED light source with either LCD, LCoS or DLP display chips.
There are no lamps to replace, however lower cost models might exhibit a rainbow effect. LCoS - technology which offers high contrast in home theatre situations. |