Projectors are popular and effective presentation tools for classroom and
business, church and community groups and for home entertainment use.
Before you buy a projector, consider the intended use and audience size and learn about the types of projectors sold.
This will help you to choose a projector that is right for your application.
The 2 types of projectors you will most likely consider purchasing are Liquid Crystal Display (LCD) and Digital Light Processing (DLP).



1
Determine the available space and the most common use for the projector. This will help you narrow down the most important attributes to consider when you buy a projector.
For example, weight will be a factor if you will transport the projector frequently. Weight will not be as important if you buy a projector for fixed installation. Portable DLP projectors are lighter than portable LCD projectors.

2
Learn about the factors used to categorize and evaluate projectors.
Resolution is a major factor. Projectors for viewing videos in a large room or auditorium, for example, will require a higher resolution than projectors used for PowerPoint presentations in an office. You need to choose a projector with a high enough resolution for its most frequent use. A resolution of 800 x 600 DPI (dots per square inch) is generally adequate for basic PowerPoint presentations in an office or conference room. 1024 x 768 or higher allows for more detail and 1280 x 1024 for an even higher quality image.

Brightness and contrast are important elements of image quality. Projector brightness is measured in lumens. Lumens range from 500 to 1,000 for small, dark rooms to more than 2,000 lumens for large, brightly lit rooms. Purchase a projector that is rated for the most brightly-lit uses you anticipate. Additionally, the larger your screen size, the more brightness you will need.

3
Decide how much you can spend to buy a projector. Projectors are available in a wide range of prices. You need to budget and balance cost and performance considerations.
When you purchase a projector, your total purchase may also include a screen and possibly other peripherals, such as a monitor and cabling.

4
Determine the number and types of inputs and outputs you will require when you buy a projector.
If you wish to project to a monitor as well as a screen, so that a speaker can refer to a presentation without turning away from the audience, you will need to choose a projector with a second VGA or video output.
If you plan to project video, determine whether you need to buy a projector with HDMI, composite or component video inputs.


5
Contact Xtraminds concept to help you choose appropriate projector for your use.

Projectors just keep getting smaller and brighter. What really impresses us,
though, is the diversity of the high-quality models for homes, businesses, and classrooms available now.

What makes the perfect projector for your needs? There's no one magic formula,
but features and performance are paramount.
These are dependent on factors such as data and video image quality, features,
portability, and connectivity choices.

We test data image quality using the DisplayMate test suite, which allows us to examine
uniformity of brightness across the image and the presence of artifacts or tinting; sharpness
and focus; the ability to distinguish between very dark shades of gray, and, conversely,
very light shades; color accuracy, and other issues.

To test video, we play selected clips from two DVDs with an eye to how the projector
handles very dark and very light scenes, and issues such as tinting, posterization
(abrupt shifts of color where they should be gradual), and the rainbow effect that's common in DLP projectors.
Many projectors do a passable job in data and/or video testing; most of the projectors featured here do a standup job in one if not both. Clearly, data image quality is more important for a business projector, while video quality is more so for a home entertainment projector.

Key features will depend on a projector's intended use. A good audio system is useful for home entertainment models, while some business and educational projectors offer interactive features, and can substitute for interactive whiteboards. Models ranging from gaming projectors to home-theater and educational projectors are incorporating 3D capabilities.

Although some pocket projectors are limited to connecting to a computer via USB alone, most projectors offer at least a VGA port to connect to a computer plus at least one video connection (generally, composite video). HDMI ports have become commonplace, even among relatively low-resolution models, and many HDMI ports are Mobile High-Definition Link (MHL)-enabled, letting you project from Android devices (and in some cases, charge them). A few models incorporate docks for connecting to an iPhone or other mobile device, while others offer Wi-Fi connectivity.

Although it's good to have multiple connection choices, it's more important to have the right ones for your purposes.
The projectors featured here are among the best recent models we've reviewed, along with a few old favorites. They span a wide range of features, portability, and brightness.

Projector have come a long way from the days when the most useful way to categorize them was by their weight class. Today there are any number of more meaningful kinds of categories, including intended use (business presentations, home theater, game playing), technology (LCD, DLP, LCOS), throw distance (how close to the screen you can place the projector), and more. Here are some questions that will help you to find a projector with the right features and performance for your needs.

What Kind of Images Do You Plan to Show?
There are basically four kinds of images you can show on a projector: data, video, photos, and games. Any projector can show any kind of image, but it's important to understand that any given projector can handle one kind of image well without necessarily doing a good job on other kinds. Naturally, you'll want a projector that does a good job with the kind of images you plan to show.

Most projectors are sold either as data or business projectors (two names for the same use) on the one hand or as home theater, home entertainment, or video projectors on the other (three names for the same use). In addition, a small but growing number are sold as game-playing projectors.

As one would expect, data projectors will most likely do well with data images like PowerPoint presentations, spreadsheets, and PDF files, while home theater projectors will most likely handle full-motion video well. Any projector that handles video well should also do a good job with photos, since photos have a lot in common with video, but without the added complication of movement, which opens the door to additional image artifacts.

Games require some of the capabilities you need for data images and some that you need for video images. If you want to use a projector for game playing, and can't find a review or see a demo that specifically relates to image quality for games, look for a model that handles both video and data images well.

How Portable Does It Have To Be?
Consider how portable the projector needs to be. You can find models with sizes and weights ranging from small and light enough to fit in a shirt pocket to large and massive enough to be suitable for permanent installation only. If you want a data projector to carry to business meetings for presentations, a game-playing projector to carry to a friend's house for serious game playing, or a home theater projector you can stow away when you're not using it, be sure to pick an appropriate size and weight. The more you plan to carry or move it around, the smaller and lighter you'll want the projector to be.

What Resolution Do You Need?
Ideally, you should match the projector's native resolution (the number of physical pixels in the projector's display) to the resolution you expect to use most often, whether you're planning on connecting to a computer, video equipment, game box, or some combination of the three. Projectors can scale images up or down to their native resolutions, but they lose image quality in the process.

If you plan to show data images, you should also consider how detailed the images will be. For a typical PowerPoint presentation, SVGA (800 by 600 pixels) is easily good enough, and getting an SVGA projector will save money compared to getting a higher resolution. The more detailed the images, however, the higher resolution you'll want.

For video, 1080p (the current high end for high definition, at least for projectors) is the obvious best choice, assuming you have a Blu-ray player, upscaling DVD player, or other 1080p device. But keep in mind that if you connect the projector to, say, your cable box, most of the channels will still be at lower resolution. If there's any chance you'll be watching video at lower resolutions, check out how well the projector handles those resolutions too.

Do You Need a Widescreen Format?
For video and games you'll almost certainly want a widescreen format. Even for data projectors, native widescreen resolutions have become common. If you create your presentations on a widescreen notebook or monitor, they may look better if you project them in a widescreen format as well.

Projectors - Technical Info

we like to look at things in a different way to others and try and stand out from the crowd. We understand that buying a new Projector can be a daunting prospect. So the last thing that you need is to be confused by all of the technical jargon that is pumped out by so many nowadays.

We have noticed that at a lot of other ‘Audio Visual Specialists’, they give you all of the technical information, but don’t explain what this means to you the customer and why it is good for your desired projector to have these features. Here at JP-UK, we have gone the extra mile to bring you this easy to understand guide, explaining what all of these features mean to you and your projector!

Brightness (ANSI Lumens)
You may have noticed throughout projector listings the term ‘ANSI Lumens’. So, what is ANSI Lumens and what does it actually mean? ANSI Lumens is the unit of measurement for the light output of a projector (in other words, how bright is it?). A Lumen (lm) is a unit used for measuring perceived output of a light source or luminous flux (light that is perceived by the human eye). ANSI stands for ‘American National Standards Institute’. ANSI measure these lumens in a specific method, where they are then regulated becoming ANSI Lumens. The method of measuring Lumens that ANSI use is renowned as being very accurate, which is why it is therefore used in the marketing of Projectors.

However, ANSI Lumens can be somewhat misleading in certain instances and although they are the regulated measurement and generally correct, should not be taken as the gospel truth as they do not take into account different types of screen sizes, screen material, levels of ambient light or viewer’s eye fatigue. The average ANSI Lumens that most projectors today come with is around 2000 - 2600 or above. This is more than suitable for your average board room or classroom that seats around 25 - 30 people.

Nowadays, brightness is becoming less of a factor as the technology in projectors starts to become more advanced. This is more so the case in Home Cinema projectors where the main assumption is that the projector will be situated in a darkened room. If you are looking to buy a projector for business, educational or a large venue use, it will most likely be situated in a room with a lot of ambient light (where you might not be able to factor out ambient light) or be used to project to a larger audience. If this is the case, you may choose to go for something between 3000 - 6000 ANSI Lumens. This will most likely lead to being more expensive, so be prepared to pay more for a piece of kit like this.

However, remember that a brighter projector does not always mean higher quality. If you use a projector with a bright light output in extremely dark settings, it can cause headaches for the audience through looking at a very bright image!

Contrast Ratio
Contrast Ratio is a measure of how well the projector is able to block out light from the projector lamp (in other words - how black is the black?). Contrast Ratio is an important technical feature in determining how good the picture quality will be from your projector, so it is important to not only check out the brightness when looking at projectors to determine which has the best picture quality! The average contrast ratio for LCD Projectors is around 100:1 and the average contrast ratio for DLP Projectors is around 3000:1

Technology - LCD vs DLP - What’s the difference? Which is better?
Up until a few years ago, the projector market was mostly full of projectors with LCD technology. LCD (or Liquid Crystal Display) is the technology where the light from the projector lamp is filtered through three glass panels, one each for the Red, Green and Blue (RGB) components of the video signal that a being fed into the projector. As light passes through the LCD panels, individual pixels open and close that the light either travels through or is blocked by to produce a full colour image. However, having the three panels means that the projector casing needs to accommodate more space for the electronics, which makes the projector larger. LCD is also sometimes called 3LCD.

Then Texas Instruments brought DLP technology (Digital Light Processing) into the market. Instead of having three glass panels that the light passes through (like LCD), the DLP chip has a reflective surface that is made up of thousands of tiny mirrors, where each mirror represents a single pixel. In a DLP projector, instead of the light passing through panels (like LCD), light from the projector lamp is directed onto the DLP chip and the mirrors of the chip wobble back and forth, which therefore directs light into the lens path to turn pixels on or away from the lens to turn pixels off.

In most DLP projectors, there is only one chip. To produce and define the different colours that we see, there is a colour wheel with red, green and blue filters. This colour wheel spins in the light path between the chip and the lens and light bounces of the tiny mirrors on the DLP chip into the path of the colour wheel, which changes from red to green to blue depending on which colour is needed. The mirrors then tilt away from or towards the lens based upon how much of each colour is needed for each pixel at any time.

Right, now you know what the difference between the two technologies is, you’re probably asking yourself “well which one is better?”. The truth of the matter is that they both have better points than the other in different aspects. For example, in DLP projectors, the colour accuracy produced is not as accurate as most LCD projector. This means that greens can end up looking quite close to yellows. Therefore, if colour accuracy is really important to you, LCD projectors would be better. However, contrast ratio is predominantly much better in DLP projectors than LCD projectors and thanks to only having one chip rather than three glass panels like LCD Projectors, DLP Projector are much more compact and portable. It all comes down to which features suit your needs best!

There are also a few other technologies which you might come across, such as LCoS (Liquid Crystal on Silicon), LED (Light-Emitting Diode) and Laser Diodes. These technologies are less common than LCD and DLP and are more specialized, found in certain brand of projectors (such as LCoS technology in certain Canon projectors) or in projectors designed for use in a particular environment.

LCoS (Liquid Crystal on Silicon), is a "micro-projection" or "micro-display" technology typically applied in projection televisions. It is a reflective technology similar to DLP projectors; however, it uses liquid crystals instead of individual mirrors. By way of comparison, LCD projectors use transmissive LCD chips, allowing light to pass through the liquid crystal. In LCoS, liquid crystals are applied directly to the surface of a silicon chip coated with an aluminized layer, which is highly reflective.


LED (Light-Emitting Diode) and Laser Diodes - Lamp Free Technology
LED (Light-Emitting Diode) and Laser Diodes are solid-state lamps that use light-emitting diodes (LEDs) as the source of light. LED lamps offer long service life and high energy efficiency, but initial costs are higher than those of traditional lamps. Chemical decomposition of LED chips reduces luminous flux over life cycle as with conventional lamps. LED lamps have a much better lamp life than traditional lamps. Traditional projector lamps, usually last on average 2,000 hours, where as LED lamps have a lamp life of 20,000 hours. This means saving you both maintenance time and money while ensuring hassle-free, long lasting projection.


Aspect Ratio
Aspect Ratio is the ratio of the width of the image to its height. Using an x:y calculation, the width size of the image is divided into “x” amounts of equal length, while the height size of the image is divided into “y” amounts of equal length. For example, an image size of 4 inches wide and 3 inches high would be an aspect ratio of 4:3.

There are three main formats of aspect ratios - 4:3 (the universal standard-definition video format), 16:9 (the universal high-definition widescreen television format) and 16:10 (the universal high-definition widescreen computer monitor and tablet format). Around 10 years ago, 4:3 would have been the standard format for a computer monitor or a television. Nowadays, most televisions come in 16:9 format and computer monitors come in 16:10 format. Another aspect ratio format which you may see around is – 1:1 (a standard square shape). Please see below a graphic illustration of the size of 4:3 format, 16:9 format and 16:10 format.


4 x 3 format
4:3 Video Format – 4:3 aspect ratio is the universal video format.

Around 10 years ago, practically everything was displayed in 4:3. However, since the mid-2000s, widescreen has took over key markets such as the entertainment sector which includes TVs and Games consoles. That is not to say that 4:3 is dead however, infact contrary to belief it is quite the opposite. Anything that is not displayed in widescreen, such as TFT monitors used in offices and classrooms around the globe and 15” laptops for instance, chances are will be displayed in 4:3.




16 x 9 format
16:9 Widescreen Format – 16:9 aspect ratio is most commonly found used in the “entertainment” market, used in High Definition Widescreen TVs, DVD players, Blu-Ray players and Games consoles.

Since 2009, it has become the most common aspect ratio for televisions and is also the international standard format of HDTV, Full HD, non-HD Digital Television and analog widescreen television.





16 x 10 format
16:10 Widescreen Format – 16:10 aspect ratio is most commonly found used in Computer Monitors, Laptops and Tablet devices.

Until around 2003, the majority of computer monitors had a 4:3 aspect ratio. Since then, 16:10 has become commonly available and first gained popularity in laptops before then taking the standalone monitors market by storm. 16:10 is most commonly found in education, office and business environments, used in laptops, notebooks, computer monitors and tablet devices.






Resolutions
The resolution is the accuracy level of the image that is displayed by the projector. The majority of business / educational projectors display a native resolution of 4:3 (video format) and come in one of two resolutions: SVGA (800 x 600 pixels) or XGA (1024 x 768 pixels). The majority of Home Cinema projectors display a native resolution of 16:9 (widescreen format) and come in one of two resolutions: 720p, which is HD-Ready (1280 x 720 pixels) or 1080p, which is Full HD (1920 x 1080 pixels). Sky+ HD uses a 720p resolution, which is only HD-Ready and not Full HD (1080p).

If you are projecting something from your computer or laptop, you may be thinking to yourself “well how do I know what resolution my computer displays?”. The majority of computers display in either XGA (4:3 Video Format - 1024 x 768) or WXGA (16:9 Widescreen Format - 1280 x 800). To find out what display your computer uses, follow the instructions below:

Using a PC? - Go to “Control Panel (Start > Control Panel)” and double-click on the “Display” option. This will open up a new window. Now select the “Settings” tab and you will see a slider in a section called “Screen Resolution”. Please use the table further below to help determine which resolution your computer or laptop is displaying in.

Using a Mac? – Go to “Monitors” or “Monitors and Sound” control panel (depending on which Mac OS version you are using). Please use the table further below to help determine which resolution your mac is displaying in.


Code

Name

Aspect Ratio

Pixels Horizontally

Pixels Vertically

SVGA

Super Video Graphics Array

4:3

800

600

XGA

eXtended Graphics Array

4:3

1024

768

720p (HD Ready)

(WXGA)

720 Pixels - horizontal lines of vertical resolution

16:9

1280

720

WXGA (16:10)

Widescreen eXtended Graphics Array

16:10

1280

800

1080p (Full HD)

1080 Pixels - horizontal lines of vertical resolution

16:9

1920

1080

WUXGA

Widescreen Ultra eXtended Graphics Array

16:10

1920

1200



Weight
Weight is an important, but sometimes overlooked factor in choosing a projector. LCD Projectors are more heavier than DLP Projectors because of the technology involved. For professionals that travel to different meetings with clients and project on the move, having a lightweight, portable projector is a necessity more than a luxury. Weight is also important when you are thinking about mounting a projector as you don’t want to have to lift and carry a heavy projector around.

Lamp Hours (Lamp Life)
A standard Projector Lamp lasts for about 2000 hours. With Projector Lamps costing anything from £100 - £500, that works out at between 8p and 25p per hour of use. However, for the lamp to last for the full range of hours specified, it needs to be looked after and used properly. This means making sure you power the projector up before use and also remember to power it down properly before shutting it down. A lot of people just turn their projector off at the mains switch after use. This will dramatically affect the lamp life and may even cause the lamp to blow. With this in mind, it is always a good idea to also carry a spare just incase of those unforeseen circumstances. The last thing you want is to be in the middle of an important presentation and for your lamp to go and have no backup to spare your blushes!

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Our daily increasing clients and returned customers is as a result of our high level of prompt service delivery, quality products and our competitive pricing that we have committed ourselves to implement.

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SALES OF ITEMS: Projector, Projector Screen, Photocopier, Flip Chart Board, Public Address System, Laptops Etc

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how much are the projectors and what brands do u have available?

Guidelines for Choosing a Church Projector in Nigeria.

Over the past few years, Xtraminds Concept (audiovisualstore.com.ng) has helped thousands of churches, companies, NGO and other outfit with their projectors and AV equipment that dazzles their audience while staying within reasonable budget.

Below we offer some tips to consider when shopping for a church projector in Nigeria.
Of course, every space is different and every church has unique needs.

Check out the buying guide below, then call us at 081 87 321 324 to get one-on-one assistance.

Audiovisualstore.com.ng has access to the largest selection of projectors and AV equipment in the industry, as well as the most highly-trained sales and support staff.

Don't see exactly what you need on our site? Call us at 081 87 321 324.

Remember, every audivisualstore.com.ng projector purchase is backed by a 6- month warranty and professional after sales & tech support.
The Four Most Important Things to Know before choosing a church Projector

Before we get started, there are four important decisions for you to make regarding your church projection needs.

1. Width of a screen: the width of your screen or the desired width of your projected image.

2. Distance: we need to know the distance your projector will be from the screen. Generally, the ideal distance is double the width of your screen. For example, if your screen is eight feet wide, your projector should be about 16 feet back from the screen.

3. Aspect ratio: The decision you have to make is the aspect ratio of your projected image. The aspect ratio is basically the shape of the picture, either a square or a rectangle e.g 4:3, 16: 9, 16: 10.
4. Budget: We need to know your budget. Don't worry. No matter how much or little you have to invest, we have a projector that fits your needs. Call us because we may be able to offer tips regarding your layout and setup 081 87 321 324.


Why Buy a Projector From Us?
• We have Largest selection of projectors in Nigeria
• High Quality from Top Brands
• Instant free delivery in Lagos & outside Lagos
• Outstanding Customer Support
• Experienced & Knowledgeable of projector
• After sales & installation services
• Payment on delivery in Lagos only.