Keystone correction
Correcting the trapezoid shape caused by projecting at an angle.
Projectors offer digital keystone, but it resamples the image and reduces sharpness. Optical lens shift is preferred whenever possible.
Related terms
- Lens shiftMoving the image up/down or left/right optically without tilting the projector.
- Corner pinThe simplest warp: moving the four corners of the image to match a flat quadrilateral surf…
Put it into practice: throw-distance calculator · lumens calculator · intro to projection mapping