Need to pay attention when buying the projector? – Projectors, home theater, bla
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To home to enjoy the feeling of a small theater, should be the selection of features for a home
Projector
What? What were the key to understanding the technical indicators? When you buy a home projector before, please do the following aspects of the preparation.
<BR> suitable
Home
The most important
<BR> Fact, not every room needs the projector. Projection screen viewing to more than four meters from the best, if your living room area of 20 square meters or more, consider purchasing the projector, otherwise not necessary.
<BR> Users choose to buy projector before, be familiar with the projector to be used. Projector into the table when using positive projection, Ceiling forward projection, the table on the back projection, ceiling rear projection and other types. If less space, choose the back reflector refraction method. If you need a fixed installation, optional ceiling approach, but must pay attention to dust and heat dissipation. Under the home environment to determine the type of machinery to buy, is the first step in preparation. To be mentioned here that due to placement of reason, the screen may become a trapezoid, so the best projector with keystone correction function should be.
<BR> brightness and contrast to moderate
<BR> Projector brightness is a measure of performance is an important indicator. Brightness is the projector to the screen on the light intensity, high brightness enables a projector to project clear sharp images, but the brightness of the more expensive the higher the price. High-brightness projector in a small environment (50 sq m) in the use of very harsh, make eye fatigue, long-term view will make the eyes red and swollen or even eye. Therefore, according to the different living room area, an optional home projector brightness is generally between 500 and 1,000 lumens.
<BR> Contrast and brightness is associated with a factor to consider. Contrast is reflected by the projection projector screen out the brightest and darkest areas the ratio of brightness, contrast generally large, the image is clear and eye-catching,
Color
Dazzling and colorful; contrast is small, the picture seems bleak, gray. Brightness and contrast are connected, if at 500-1000 lumens brightness, the contrast at 400:1 or so has been good.
<BR> Select the appropriate resolution
<BR> Projector and
Digital Cameras
,
Digital Camera
The same picture quality, tasting it with a resolution of the standard. Digital Projector XGA resolution is divided into grades, that is, 1024 × 768dpi; SVGA level, that is, 800 × 600dpi; SXGA level, that is 1280 × 1024dpi, the market is more common for the first two. Note that the higher the resolution, the more expensive price. There are also a compatible resolution, compatible with high resolution than the physical resolution of a step. And DC, DV, as higher the resolution, the more clear the image projector, the higher the price. Although the effect of SVGA can already meet the needs of the family, but from the long-term point of view, if economic conditions permit, it is best to buy a standard physical resolution XGA projector, it shows the effect more clearly.
<BR> rational allocation
Projection screen
<BR> Under
Make
Process and Surface
Paint
Different projection screen is generally divided into ordinary white screen and glass-bead screen. Ordinary white screen fabric in the private
Spray
White paint, and made to do a simple treatment, which is characterized by low cost, wide angle, visual effects soft. Disadvantage is that the gain of light is small, so only light in the background is not strong for the family to use, or require the use of high brightness projectors. Glass bead screen is small dedicated fabric spray
Glass dust
At the end made with affordable, wide angle, high-gain advantage. Drawback is more expensive, and the color will darken, and should not be rolled over and over again, or bead off easily
<BR>, Affect the results.
<BR> Higher if the background brightness, the projector more than 1,000 lumens brightness, you can consider a few hundred dollars worth of ordinary screen. If the home background brightness is not high, or the lack of projector brightness, you can consider the glass-bead curtain slightly higher purchase price in order to improve the projection brightness.
<BR> concerned about bulb life and after-sales service
<BR> For the projector, the bulb life problem is weakness. Length of lamp life is directly related to the use of the cost of the projector, so be sure to ask what to buy lamp life and replacement cost. Now more commonly used projector light source UHE and UHP two former are cheap, but not as good as UHP long life, mainly for mid-range projector; and UHP up to 4000 hours over life, brightness attenuation is small, but prices expensive. Also to note is that different
Brand
Projector light bulbs used in general are not interchangeable use. The same time, be sure to ask when buying service conditions, service agreements entered into evidence or received for repair, so as not to worry.
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