Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
The light projected by the device is brighter, i.e. it has a higher ANSI lumens measurement.
Motorized or power zoom lenses allow the user to remotely press a switch, for example on a remote control, causing the projector to automatically zoom in or out and correct the size of the image.
4.maximum projection size
The maximum size of image that a device can project without compromising quality.
The lens shift feature on a device allows the optical lens to be physically shifted up and down (vertical) or left and right (horizontal).
This allows to manually set the focus.