Currently, projectors are gradually coming into ordinary families, which are the most widely used in business or education field all the time. Compared with the high-end TV products,
home projector has obvious advantages. In general, projector features big screen, good brightness, light weight, compatible with a variety of video signals. Besides, it can connect to cable TV or regular TV, can direct receive up to 100 sets of TV shows, also including DVD, VCD, LD, computers, and other video equipment signals. What's more, there is no radiation. When combines with external speakers, its visual effects and a real theater is no different.
As Panasonic, Sony, Hitachi and other international brands have launched a million or so home projector, the domestic Tongfang, Patriot and other brands also have their own product launch. Whereas, ordinary family is often lack of a certain understanding of the projector. Therefor, it is extremely easy to result in investment waste and even poor decisions. So, how to choose a reasonable price for a home projectors? TradingMic's experts (
http://www.tradingmic.com ) think that it is should take technical specifications and types into account.
First, the applications of projector
No matter the home theater, or others home video such as
portable dvd player, buyers should be familiar with the applications of projector. There are mesa positive projection, Ceiling positive projection, mesa back projection, ceiling rear projection and other types. Positive projection projector means that the audiences and projectors are on the same side; the back projection projector is saying that the projectors and the audiences are at both ends of the screen, which required rear projection screen. If indoor space is small, you'd better choose the method of back mirror reflection. If you want a fixed installation using, just select ceiling projection. And there is need to pay attention to dustproof and heat dissipation. In addition, due to the restrictions of the placement, the projected image may be trapezoidal, so the best projectors should features the keystone correction function. The function can transfer the deformed image into square shape.
Second, the moderate brightness and contrast
Brightness is an important performance measurement for projectors. It refers to the light intensity from projector to the screen. High brightness can project clear and bright images, and the higher brightness, the more expensive price. However, high-brightness projector is used in a small environment, that can cause eye dazzling, and long-term viewing will make the eyes red and swollen and even eye disease. Therefore, home projector brightness varies for different living room according to the specific area. Contrast is the ratio of brightest and darkest areas reflected by the projector. General speaking, the greater the contrast, the more clear the pictures are.
Third, appropriate resolution is important
Just like digital cameras and
digital camcorders, resolution standards is the most important for projectors. Digital projector's resolution can be divided into: XGA class, that 1024 x 768dpi; SVGA class, 800 x 600dpi; SXGA class, 1280 x 1024dpi. And more common for the market is the first two. Beyond that is the compatible resolution, which is in a higher level.
Fourth, projection distance
For home users, the living area is very limited. And the distance between the projector to screen is not much distance. For this reason, to the narrow space home environment, users should compare the project distance under the same diagonal size of the different projector, rather than "the shortest projection distance" on the spec sheet.
