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A projector may seem like a device that you do not often use. However, for many people in business and education circles, or people who need to convey images and sound to others, a projector is a very important device and is almost indispensable.

A projector is a device that transfers images in an enlarged form and displays them onto a screen. It is widely used in the corporate setting for projecting presentations onto screens. It can be connected to a variety of devices, such as video, CDs, DVDs, Blu-Ray players, computers and smartphones.

Today, manufacturers develop a projector to be lighter and support a variety of applications. The rendering quality is also higher while the price keeps decreasing, unlike the past. However, you should consider several factors before purchasing for the cost-effectiveness. We have summarized the points as follows.

A projector is classified into the following categories:

1. Conference Type
20 pounds or more. Suitable for permanent or semi-permanent installation with least moving regularity. The device comes with high capability, but a higher weight and a higher price are the trade-offs

2. Portable Type
10-20 pounds. Suitable for meeting rooms or seminar rooms with medium to large size. The advantage is the portability and ease of connecting. Even if it lacks some of the capabilities that the conference type has, it is not entirely ineffective.

3. Ultra Portable Type
4-10 pounds. Suitable for travelers and limited space. However, with its compact size and lightweightness, the quality may be decreased. For example, it may have less contrast and brightness values. If the quality is good, then the price is definitely higher.

After knowing different types of a projector, let's take a look at the steps for choosing a projector.

1. Determine your requirement
You should see the area that you would like to install to determine the suitable type of projector. For example, for a room with 50 seats or more, the conference type should be used. However, if you are constantly traveling and your audience is around 10 - 20 people, an ultra portable type is more suitable.

2. Brightness
It is one of the first factors to consider. The ANSI Lumen is the unit of brightness, for example, 2,600 2,800 3,000 or 4,000 ANSI Lumen. The higher the ANSI Lumen, the brighter and clearer the image even in a bright environment (mostly the ANSI Lumen is referred to as Lumen or LM).

3. Resolution
Resolution is a very important factor, especially when connecting to a computer or a smartphone, which are high in resolution. If the projector has a lower resolution, it will not be able to render clear images. Thus, you need to choose the right resolution of a projector, which includes:

SVGA = 800x600 pixels (low resolution)

XGA = 1024x768 pixels (fundamental resolution)

WXGA = 1280x1024 pixels (high resolution)

UXGA = 1600x1200 pixels (ultra-high resolution

4. Projector's Throw Distance
A projector's throw distance is the distance between a projector and an image on the screen. Each projector has a different throw distance, depending on usage. If you would like to display in a limited area, use a throw distance of 0.1 to 6 meters. This means that the projector should display an image at the nearest range of 10 centimeters. If you move the machine closer to the screen than 10 centimeters, the image will be blurred. It is the same when you move the machine further from the screen for more than 6 meters.

These are some of the things to consider before buying a projector. We hope it is useful for you!