The different screen sizes which the device can work with.

The aspect ratio is the ratio of the width of an image to its height. The native aspect ratio is the one which the projector/display is particularly designed for. Images shown in native aspect ratio will utilize the entire resolution of the display and achieve maximum brightness. Images shown in other than native aspect ratio will always have less resolution and less brightness than images shown in native aspect ratio.

The aspect ratio is the ratio of the width of an image to its height. The supported aspect ratios are the aspect ratios that can be shown by the device.

The maximum length at which an image can be projected.

A property of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing.

Measures how much the camera can adjust its focus for distance shots. A 3x zoom ratio changes the camera's focal length by a factor of three, from 35 mm to 105 mm for example.

The amount that the camera lens can zoom.

Defines in percentage the harmonious spread of the projection

The length of time (usually measured in hours) which the lamp can be used for.

The power of the lamp, usually measured in watts (W).

The number of lamps in/with the product.

Measure of how strongly the system converges or diverges light. For an optical system in air, it is the distance over which initially collimated rays are brought to a focus. A system with a shorter focal length has greater optical power than one with a long focal length; that is, it bends the rays more strongly, bringing them to a focus in a shorter distance.For an optical system in air, the effective focal length (f and f′) gives the distance from the front and rear principal planes (H and H′) to the corresponding focal points (F and F′).

Aperture range of the device's optics, expressed in f-stops.

Indicates the digital zoom capacity, the number of times that the picture is enlarged thanks to digital technology.

Indicates the optical zoom capacity, which is the number of times that the picture can be enlarged with the optics of the camera.

The supported protocols for exchanging analog signals.

The device can be used with 3D technology.

The video modes that can be displayed by the device.

Number of VGA (D-Sub) ports (connecting interfaces) in the device. The VGA (D-Sub) connector is a 15 pin connector between a computer and a monitor. It was first introduced in 1987 by IBM.

The number of sockets (ports) for HDMI connections. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.