Based on the manufacturer’s announcements, we can completely choose for ourselves products that suit the requirements of the job.
Select projector according to parameters
3 factors determine projection ability: Brightness, Contrast, and Resolution.
Table of Contents
Light intensity
Light intensity is a unit of measurement for light emitted from a projector, measured in ANSI lumens or “lumens” for short. The higher the light intensity of a projector, the brighter and clearer the projected image.
Contrast
Contrast is the ratio between the brightest and darkest areas that the machine can display on the projection screen. The higher the contrast the projectors have, the clearer the details will be and won’t get mixed up. Helps the presentation image appear clearer and more realistic.
Resolution
Resolution is the density of pixels per frame. Resolution is the factor that determines the sharpness of a projector’s projected image. If the projector supports higher resolution, the pixel density will be thicker and the image will be smoother and clearer.
THE RESOLUTIONS THAT ARE APPLIED ON PROJECTOR CURRENTLY
| Symbol | Ratio |
| VGA | 640×480 |
| SVGA | 800×600 |
| WVGA | 854×480 |
| WXGA | 1280×768 |
| XGA | 1024×768 |
| UXGA | 1600×1200 |
| SXGA | 1280×1024 |
| SXGA | 1400×1050 |
| WSXGA | 1920×1080 |
| HD | 1280×720 |
| FULL HD | 1920×1080 |
| QXGA | 2048×1536 |
| 4k | 4096 x 2160 |
Technology
There are several types of technology used in projectors but the main types of technology are LCD, DLP, and LED
All three technologies can be used for any application and give good results; However, DLP projectors are often preferred for video applications because they produce a smoother, softer image while LCD projectors are ideal for computer data applications because they are sharper and often brighter.
LED projectors are quite suitable for home entertainment needs with a resolution of up to 4K, providing sharp and vivid image quality, helping you fully enjoy blockbuster movies, videos, and listen to music…
Projector aspect ratio
Aspect ratio is the ratio of an image’s width to its height. Projectors are divided between a 4:3 aspect ratio (computer screen shape), 16:10 (commercial widescreen format), and 16:9 aspect ratio (widescreen TV shape).
4:3 projectors are mainly used for business purposes for use with computers.
16:9 projectors are used for home cinema or for showing DVDs.
The 16:10 aspect ratio is seen in widescreen business projectors. These projectors have been designed for use with widescreen computers.
Most projectors, whether they are 4:3, 16:10, or 16:9, are compatible with other aspect ratios. A simple option in the projector menu will convert images between formats. However, it is not recommended to use a projector in a format other than its native aspect ratio because it will stretch or compress the image or it will miss parts of the image.
The ideal aspect ratio depends on the application:
If you plan to use the projector primarily for business presentations, training, classroom applications, etc. with a standard computer, you should choose a 4:3 projector.
If you are using a projector with a widescreen computer, you should choose a 16:10 projector.
If you are using the projector for home cinema or showing DVDs to an audience, you should choose a 16:9 projector.
Connect ability
Connection ports on projectors are usually divided into two types: input signals and output signals.
Depending on the projector’s projection technology, and the projector’s features, the signal ports are diverse (VGA, HDMI, DVI, LAN, MHL, AV, …).
Before buying a projector product, check what ports your signal transmitter has, then choose a projector that supports an input signal port that matches the output port of the device (desktop, laptop,…).
The projector’s connection cable is responsible for improving image quality. Current cable types that projectors can read include composite video, s-video, DVI, VGA, HDMI… DVI cables are capable of transmitting high-definition signals but can only transmit video signals, you need an extra audio cable to support it. With HDMI cables, they will display extremely high-definition images in a compact size, while protecting content, preventing high-definition signal theft.