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Before buying a projector, first determine how far from the screen or wall it will be placed. If the projector isn't placed at its optimal throw distance, it won't provide a sufficiently sharp image.
 

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The ideal projector resolution depends on what you intend to project

Film projectors

Movies are filmed in widescreen resolution. Therefore, when choosing a a film projector, go for a model with an aspect ratio of 16:9 or 21:9. A Full HD (1920 × 1080 pixels) or 4K (3840 × 2160 or 4096 × 2160 pixels) native resolution provides excellent image quality. If you are on a limited budget or require a shorter throw distance, HD resolution (1024 × 768 pixels) is sufficient.

Office projectors for presentations

For presentations, we recommend an aspect ratio of 16:10 or 4:3. Office projectors with WXGA resolution (1280 × 800 pixels) or higher provide sufficient image quality .

Visualisers

Visualisers can scan photos, sheets of paper with text, objects, etc., and convert them into digital form. Then you can display the information on your computer screen or project it through the projector. Visualiser are often used during lectures and presentations.

Read about the difference between the native and maximum resolution of a projector.

What else should I consider when choosing a projector

Projection distance and image diagonal

The further you place the projector from the screen or wall, the larger the size of the projected image.

Projection distance2 m3 m4 m5 m
Diagonal1.1 to 1.6 m1.6 to 2.4 m2 to 3.2 m2.5 to 4 m

Luminosity

  • Up to 2000 lumens - suitable for darkened rooms with minimal lighting.
  • 2000-3000 lumens - recommend for less well-lit rooms.
  • Over 3,000 lumens - provides a highly visible projection, even in daylight.

Technology

  • DLP projectors - have excellent contrast and shadow detail. Compared with LCD projectors, they require less maintenance (no need to clean the dust). The disadvantage is that fast moving objects may cause a rainbow effect on the canvas.
    • With halogen lamp - compared with LED projectors, they are often larger in size with higher luminance and power consumption.
    • With LEDs - generally smaller in size; they offer low power consumption, but also lower luminosity.
  • LCD projectors - outstanding colour reproduction. Compared with DLP projectors, they are more prone to rainbow effect but are quieter. They are also slightly more difficult to maintain (some models have a dust filter, which must be cleaned from time to time).

Connection

Before buying, make sure the projector has at least one same port as the device to which you plan to connect it. If not, you won't be able to connect to the projector.

HDMI cable HDMI

VGA cable D-SUB (VGA)

composite cable Composite

component cable Component

Useful functions and features

  • Remote control - allows convenient operation and setup of the projector.
  • Built-in speakers - ideal for those planning to show films and videos.
  • Wi-Fi - project slideshows, movies and videos wirelessly from your computer.
  • Zoom - resize the image without moving the projector.
  • PiP (Picture in Picture) - allows you to project two different presentations or videos simultaneously.
  • USB port - project films, videos or presentations without your PC via an external memory drive.
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Projectors

Projectors

Projectors are excellent presentation tools as well as perfect home cinema devices. They can be easily connected to DVD players and computers, so you can sit back, munch popcorn, and enjoy great cinematic experiences in the comfort of your own home.

Projectors typically have many input signal options, featuring composite, S-Video, VGA or HDMI. You can project on plain white walls, but to get the best performance, choose from the range of professional projection screens available. Depending on the way in which they process the internal video signal, projectors are either LCD or DLP. Although these technologies are different, and LCD projectors used to be considered better for projecting data from computers while DLP models were ideal for screening films, today both technologies are practically equivalent.

LCD Projectors
The light source in LCD projectors passes through three primary colour filters. Each then passes into one of three LCD panels through a permeable layer. Finally, all three colours are combined again and projected through an optical device onto a screen, where they are displayed as a complete picture. These devices are both lightweight and easy to maintain.

DLP Projectors
DLP projectors work with DMD chips and use a large number of microscopic mirrors, with each mirror representing one pixel. The image is again broken down into the three primary colours (red, blue, green) and then passes through the micro mirrors and lens before being projected onto a screen.

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