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Catalog   /   TVs & Video   /   Projection Equipment   /   Projectors

Comparison Acer P1150 vs Acer P1250

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Main functionuniversaluniversal
Lamp and image
Lamp typeP-VIP
Service life5000 h5000 h
Service life (energy-saving)10000 h10000 h
Lamp power203 W203 W
Brightness ANSI Lumens3600 lm3600 lm
Dynamic contrast20 000:120 000:1
Colour rendering1 billion colours1 billion colours
Horizontal frequency15 – 100 kHz15 – 100 kHz
Frame rate24 – 120 Hz24 – 120 Hz
Projection system
TechnologyDLPDLP
Size0.55"0.55"
Real resolution800x600 px1024x768 px
Max. video resolution1920x1200 px
Image format support4:3, 16:94:3, 16:9
Brightness/contrast enhancement
 /LumiSense/
Colour enhancement
 /ColorBoost/
 /ColorBoost/
Projecting
Rear projection
Throw distance, min1 m1 m
Throw distance, max12 m12 m
Image size22 – 300 "22 – 300 "
Throw ratio1.96:1 – 2.15:11.96:1 – 2.15:1
Optical zoom1.1 x1.1 x
Digital zoom2 x2 x
Zoom and focusmanualmotorized
Auto keystone correction
Keystone correction (vert), ±40 °40 °
Features
Features
light sensor
MHL support
3D support
light sensor
MHL support
3D support
Wi-FiWi-Fi ready
Hardware
USB 2.011
Number of speakers11
Sound power3 W10 W
Video connectors
VGA /2 inputs, 1 output/
composite
VGA /2 inputs, 1 output/
composite
HDMI inputs22
HDMI versionv 1.4v 1.4
Audio connectors
3.5 mm input (mini-Jack)
3.5 mm output (mini-Jack)
3.5 mm input (mini-Jack)
3.5 mm output (mini-Jack)
Service connectors
COM port (RS-232)
USB (slave)
 
USB (slave)
General
Noise level (nominal)30 dB30 dB
Noise level (energy-saving / quiet)26 dB26 dB
Power sourcemainsmains
Power consumption260 W260 W
Size (HxWxD)105x300x220 mm105x300x220 mm
Weight2.4 kg2.4 kg
Color
Added to E-Catalogoctober 2018december 2017

Lamp type

— HD (High-intensity discharge). General name for gas discharge lamps, i.e. lamps in which the light flow is created by an electrical discharge between the electrodes inside the bulb. In the case of projectors, such lamps can be mercury, metal-halide, and xenon (see above for more details).

LED. LEDs are used as a light source. They provide high brightness with low power consumption.

Laser-LED. Light source based on laser LEDs. It has even greater brightness than classic LED, with relatively low power consumption.

— UHP (Ultra-high performance) — a high-pressure mercury lamp, developed by Philips. Compared to other lamps, it consumes less power, while not inferior in brightness. Projectors on such lamps are smaller and lighter than conventional ones due to a smaller power supply, the cooler operates with a lower noise level. The creators claimed a service life of up to 10,000 hours. One of the most popular types of lamps for projectors today

– UHE (Ultra-High Energy). Variety of UHP lamps (see above).

— UHB (Ultra-high brightness). Another kind of UHP lamps (see above).

— NSH (New Super High Pressure). Also applies to high pressure mercury lamps manufactured by Ushio. Somewhat less popular than UHP and its peers, but also widespread. Estimated operating time is about...2000 hours.

— SHP. High pressure mercury lamps manufactured by Phoenix.

— P-VIP (Video Projector) — a high-pressure mercury lamp from OSRAM. High brightness lamps, service life — 4000 — 6000 hours.

—UHM (Ultra High Performance Lamp of Matsushita) is a high pressure mercury lamp manufactured by Panasonic. Сan be easily changed, operating time, depending on type — 2000 — 5000 hours.

— Xenon. The design and principle of operation of such lamps are similar to high-pressure mercury lamps — light is created due to a discharge in a gaseous medium. However, instead of mercury vapor, in this case, an inert xenon gas under high pressure is used. This allows to create high power lamps (from 2 kW) with the appropriate light flow. Xenon lamps are used primarily in professional models.

— HPM. High-pressure mercury lamp technology developed by Sony and used primarily in its projectors (although other brands are also available). Combines compact size and relatively low cost with high brightness.

— DC. Abbreviation for "direct current". In the case of projector lamps, this designation usually refers to mercury lamps powered by direct current. The operating voltage of such lamps in different models of projectors may be different. Their design usually uses various tricks to improve performance compared to conventional lamps of this type — in particular, increase service life and reduce power consumption without sacrificing brightness.

— AC. This abbreviation stands for "alternating current". Such lamps are similar in almost everything to the DC ones described above, differing from them only in the type of power supply.

Real resolution

The native resolution of the image produced by the projector matrix.

The minimum for modern projectors is actually the VGA standard, which assumes a resolution of 800x600 or close to it. The most limited of modern high-definition standards is HD (720); the classic size of such a frame is 1280x720, but projectors also have other options (up to 1920x720). A more advanced HD format is Full HD (1080), which also has several variations (the most popular is 1920x1080). And among high-end projectors there are models of Quad HD, Ultra HD (4K) and even Ultra HD (8K) standards.

In general, the higher the resolution, the clearer and more detailed image the projector can produce. On the other hand, this indicator directly affects the cost, and all the benefits of high resolution can only be appreciated if the reproduced content also corresponds to it. Note that modern projectors can work with higher resolutions than the “native” ones – for more details, see “Maximum video resolution”.

Max. video resolution

The actual maximum frame resolution that the projector is capable of processing and displaying.

Many models allow project images at a higher resolution than the actual resolution of the projector matrix (see above). For example, a 1920x1080 video can be displayed on a device with a frame size of 1024x768. However, the quality of such an image will be noticeably lower than on a projector, which initially has a resolution of 1920x1080.

The maximum resolution is closely related to both the overall picture quality and the size of the projection screen. The higher the resolution, the sharper the image details become. Of course, the screen size itself should be taken into account. The fact is that on a 40-50″ projection surface there will not be much difference between the Quad HD and 4K formats. A high-resolution picture will be able to show itself on a truly large screen.

Brightness/contrast enhancement

Support by the projector of one or another technology of brightness/contrast enhancement.

Usually in such case, software image processing is implied to improve brightness and/or contrast (if necessary). Specific processing methods may be different — in particular, in some cases we are actually talking about turning standard content into HDR, and some manufacturers do not specify technical details at all. The effectiveness of different technologies can also be different, and besides, it is highly dependent on the specific content: in some cases, the improvement will be obvious, in others it may be almost imperceptible.

Zoom and focus

The type of zoom and focus provided in the projector's design..

These procedures are carried out by moving individual elements of the lens and changing its general optical properties. The mentioned movement can be provided in different ways, on this basis, the following types of zoom and focus are distinguished:

Manual. As the name implies, in this case the user must manually adjust the projector's optics (most often by turning special rings on the lens). The advantages of this option are simplicity, low cost and reliability. On the other hand, remote control of zoom and focus is not applicable in such projectors, which can cause problems, especially when installing the device in a hard-to-reach place (for example, under the ceiling).

Motorized. Zoom and focus systems powered by an electric motor. This design allows you to control the optics of the projector remotely — for example, from the remote control or through the RS-232 management port (see below). Its main disadvantages are complexity and high cost.

In models without a lens (see below), this parameter is indicated by whether lenses with motors are supported by the device. If such optics can be installed on a projector, it is classified as a motorized model, otherwise it is referred to as a manual one.

Auto keystone correction

Automatic image alignment when the projector is moved away from the screen. If the central axis of the projection ray does not coincide with the central axis of the screen, then an effect in the form of a so-called keystone occurs. The projector uses a special software algorithm to emulate screen and projection ray alignment. This is not effect the quality of colour reproduction or the depth of textures, but the image can be aligned. The auto keystone correction feature works on the basis of a proximity sensor, which evaluates the difference between the sizes of the edges of the picture. If a keystone effect occurs, the projector straightens the picture without user participation.

Wi-Fi

Wi-Fi standard supported by the projector.

Wi-Fi is known mainly as a method of wirelessly connecting to the Internet and local networks. In addition, more recently, this technology has also been used for direct connections between wireless devices. Accordingly, the methods of using Wi-Fi in projectors may also be different. Thus, some models are capable of connecting to local networks to work with content via DLNA (see above); in others, such a connection is used for control from a computer or other network device; in others, a “remote control” like a smartphone or tablet can connect directly via Wi-Fi.

As for Wi-Fi versions, the most popular options in modern technology - Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac) - are quite compatible with each other, and the difference between them in this case is not critical. Therefore, you don’t need to pay much attention to these details when choosing.

There are also Wi-Fi ready projectors, which do not have Wi-Fi out of the box, but when connecting the appropriate adapter (purchased separately) are capable of a wireless connection.

Sound power

The nominal power of the sound system installed in the projector.

The higher this power, the louder the sound the device can produce, the better it will be heard in a large room and/or noisy environment. At the same time, it is worth noting two nuances. First, built-in speakers are usually made relatively low-power — otherwise they would take up too much space. Secondly, most modern projectors allow the connection of external sound system (see "Audio connectors"), more powerful than the built-in one. So it makes sense to pay attention to this indicator if you initially plan to use the "native" sound of the projector. Detailed recommendations on the required power for certain conditions can be found in special sources.

Service connectors

Service connectors for connecting control equipment, provided in the design of the projector. Specific control options in each case may be different, they should be specified separately.

COM(RS-232). A specialized connector, originally used in computer technology. In general, it is considered obsolete, it is relatively rare among computers, but it is very popular in various specialized equipment.

USB (slave). Connector for connecting to the USB port of a PC or laptop. With this connection, the projector acts as a peripheral device and can be controlled from a computer. In addition, relatively recently, portable projectors have appeared that are designed for wired connection to mobile gadgets such as smartphones or tablets; they also indicate the USB port (slave), although the specific connection may be different (for example, 8-pin in Apple devices).

LAN (RJ45). Standard connector for wired connection to computer networks. A projector connected in this way works as a network device, it can be accessed (with appropriate settings) from any local computer. This can be more convenient than using only one control computer. In addition, other features can be implemented through the LAN — for example, DLNA (see the relevant paragraph).

HDBaseT. A complex interface used mainly in professional equipme...nt (see "Main purpose"). In fact, it is an extended version of the LAN described above, it uses the same connectors and cables, but it has more extensive functionality. In addition to LAN and Internet access, HDBaseT provides dedicated control signals, audio and video streaming, and even power up to 100 W.

3D Sync. This port allows you to connect a 3D emitter to the projector, which is necessary for the formation of a volumetric image using active 3D technology (see the relevant paragraph). Accordingly, in order to view a stereo image, it is necessary to use active-type 3D glasses. The glasses are synchronized with the 3D emitter, which makes it possible to achieve a clear and understandable stereo image.
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