Clever Topics

Projector Aspect Ratio

The aspect ratio is the ratio of the width of an image to its height.
Projectors are divided between 4:3 (computer monitor shape) and 16:9 (widescreen TV shape) aspect ratios.
The 4:3 projectors are mainly used for business purposes to use with a computer.
The 16:9 projectors are used for home cinema or to project DVDs.
There is also a 16:10 aspect ratio seen in widescreen business projectors. These projectors have been designed for use with widescreen computers, although they are also used by home users.

Most projectors, whether they are 4:3, 16:10 or 16:9, are compatible with other aspect ratios. A simple option in the projector menu will switch the picture between formats. It is however not recommended to use a projector in a format other than its native aspect ratio as it will stretch the image or it will miss parts of the picture.

The ideal aspect ratio depends on the application:

  • If you are going to use the projector mainly for business presentations, training, classroom application etc. with a standard computer it is advised to choose a 4:3 projector.
  • If you are using the projector with a widescreen computer it is recommended to choose a 16:10 projector.
  • If you are using the projector for home cinema or to project DVDs to an audience, it is recommended to choose a 16:9 projector.

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