Choosing Best projector
It is the number of luminous points that you can see on the screen. Standard equipment has resolutions SVGA (800 x 600) and XGA (1024 x 768). With an SVGA resolution, you will see 1,440,000 pixels or luminous points. While an XGA resolution extends that number of points to 2,359,296 pixels. This improvement in resolution allows you to appreciate small letters or numbers with better edge definition.
Many devices support HD resolutions up to 1920 x 1200 (WUXGA) achieving exceptional image quality.
It is the luminous power of the equipment. The unit of measure is the ANSI lumens. These standards correspond to the American National Standards Institute of the USA and measure the light power of the equipment on a neutral screen. As the brightness increases, you can work with more light in the environment.
The basic projectors are today at a brightness of 3000 ANSI. The ideal brightness of the Projector will depend on the size of the room, the size of the screen and the brightness of the room.
How is the ideal luminosity that a Projector needs in a room determined?
- Measure the light that hits the screen or the wall where it will be projected.
- An ideal contrast of value 10 is taken.
- The surface of the screen is taken. Example 100 “= 3 × 2 = 6 meters (surface)
The equipment is divided into micro-portable (less than 2.5 Kg), ultra-portable (less than 4 Kg), portable (less than 10 Kg.) Or Hall equipment (over 10 Kg).
The measurement of the screen and the distance in which the equipment will be placed, require reasoning, it is important to consult an expert.
The equipment has different lenses, from a normal lens, a wide angle or a lens. This will allow, after determining the size of the screen, that the projector can be placed in the middle of the room, very close to the screen or at the end of the room.
While most computers have zoom, in many cases the image is larger than the screen, or on the contrary, it is very small and does not meet the requirements. It is very important to take into account this issue when choosing a team. Avoid unpleasant surprises.
The measurements of the screen are determined in inches diagonally. Example: A 100 “screen measures 1.52 meters high by 2.05 meters wide. The aspect ratio of the projectors is 4: 3 (The new generation of projectors, already incorporates the 16: 9 screen option, Example: 2.05mx 1.15m).
How do you go from a 4: 3 screen to a 16: 9 screen or vice versa?
The 4: 3 screen has a measurement of 3 × 2 meters.
Screen width: 3 × 9/16 is equal to the height (1.68 meters)
The 16: 9 screen has a measurement of 3 × 1.68 meters.
Screen width: 3 × 3/4 is equal to high (2.25 meters)
Important points to analyze:
The useful life and replacement cost.
Being the only input that has the projector and its high replacement value, we recommend the purchase of a Multimedia Projector whose lamp exceeds 5000 hours of useful life. There are models with lamps for 10,000 hours.
Warranty and After-sale Service
Most brands give guarantees for 2 years.
The After Sales Service is very important because the success or failure in the choice of a Multimedia projector does not end with the delivery of the equipment. Our Company provides the Technical Service in Rosario and we also offer an exclusive program of integral cleaning of Multimedia Projectors
Not always the smallest or lightest projector is recommended. This is very important since certain projectors of exaggeratedly reduced sizes overheat by dissipating the heat through their casing and not by means of heat sinks. Removing the heatsinks reduces the weight of the projector but the equipment works very demandingly.
The Pico Projectors of less than 1 kg. They started using LED technology to avoid the problem of overheating.
There are 3 proprietary technologies:
- LCD (Liquid Crystal Display).
- DLP (Digital Light Processing)
- LED (Light Emitting Diode)
The technology LCD projects images of greater brightness, the equipment is smaller and lighter and easy to use. This technology is rich in colors and requires a lamp of less power than DLP technology.
DLP technology represents a valid alternative since it is cheaper than LCD technology. It has an incredibly high native contrast ratio, so the projections will be extremely easy to read. Work with a chip with thousands of micromirrors in motion.
LED technology has a longer life and fails less frequently. They provide a greater number of colors and they are more saturated on the screen. They can be smaller and lighter. They generate a greater energy saving.
The useful life of the equipment
Ask your Consultant or Provider to describe the technology of the Projector you are offering. The most prestigious brands use a system of the main plate and individual sub-plates. In case of technical problems, this allows the replacement of the affected plate without the need to change the Motherboard. The cost of the Motherboard makes its change unviable in most cases.
In case of technical problems in Projectors that do not use this system, it is always necessary to change the Motherboard, which ends in very high repair costs. They are usually the most economical at the time of purchase and although the warranty is 1 or 2 years, the problem for the user arises when the equipment has problems expired that guarantee.
Projectors for Home Cinema v/s Corporate Projectors
There are various projectors made for different purpose example projectors for gaming are different and for home cinemas are different. It is very important to differentiate the projectors manufactured for the home market from those manufactured for Corporate use.
The equipment for Home Cinema has a lower brightness and a very high contrast.