Zoom lens
A lens with an adjustable throw ratio range.
Zoom gives flexibility in projector placement. Installation projectors usually ship without a lens so you can pick the right zoom range.
Related terms
- Throw ratioDistance from the lens to the image divided by the image width.
- Lens shiftMoving the image up/down or left/right optically without tilting the projector.
Put it into practice: throw-distance calculator · lumens calculator · intro to projection mapping