Keystoning (or Keystone Effect)



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Keystoning is name for the visual effect of a trapezoidal image. Generally, this is caused when the projector is at an angle to the screen surface. The resulting image, instead of rectangular, has a narrow top and wide bottom (or the opposite).

Keystone Correction is the term for digitally trying to correct the effect. This always results in a loss of resolution, and often adds additional undesirable artifacts.

Proper installation of an HDTV projector should ensure its positioned correctly to the screen so such electronic adjustments are not necessary.

Check out reviews of projectors here.

Check out screen reviews here.

Find a qualified installer here.


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