Published On: October 9, 2013

Keystoning (or Keystone Effect)

Published On: October 9, 2013

Keystoning (or Keystone Effect)

Keystoning is a visual effect created by a trapezoidal image. It is usually a problem associated with video projectors. Fortunately, there are solutions to fix this problem and restore the proper image


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.

Subscribe To Home Theater Review

You'll automatically be entered in the HTR Sweepstakes, and get the hottest audio deals directly in your inbox.
Notify of
Inline Feedbacks
View all comments
When you buy through links on our site, we may earn an affiliate commission. Your support is greatly appreciated!
© JRW Publishing Company, 2020
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram