Magsafe Power bank,Baseus Power Bank,Best Power Bank 2021,power bank magsafe Pogo Technology International Ltd , https://www.wisesir.net In recent years, the domestic projector market has maintained a good development trend, especially driven by 3D portable, consumers are more admired for it, but it is worth noting that, like other pan-IT products, the projector market There are also many traps, and those who are not guilty of the situation are easily fooled, especially the hidden rules of the industry, which is even more hateful.
Unspoken rules - brightness virtual standard
As one of the most important parameters of the projector, the proportional relationship between brightness and cost price is a well-known law in the industry. It is undoubtedly the focus of manufacturers and consumers, but as more manufacturers enter, the projection products are mixed. The problem arises, the brightness of the virtual standard is their most common means, and the most common way to cheat.
The bottleneck of micro projection - brightness
It can be said that the brightness basically determines the size and distance of a screen that the projector can project, and for business applications, it determines the size of the conference room that can be used, or how many people can provide clear image effects, so everyone Try not to discount the brightness selection, which will affect the final imaging and adaptability to the environment.
In addition, from the current status of the projector industry, since the principles of various projection technologies are different, it is difficult to unify the standards, so it is difficult to quantify and compare the parameters, but also because of the lack of standards, and also exist in similar products. Cheating at the peak of the elevation, you need to pay careful attention to the actual purchase.
Finally, this year is the beginning of 3D projection scale application. Many manufacturers have started to introduce their own products. Since the current mainstream 3D applications are mostly imaged by “time division methodâ€, it is bound to cause loss of brightness, if there is demand for 3D projection. Be sure to turn off the brightness to prevent excessive deviation when opening 3D applications.
In today's era of information explosion, one of the most inevitable problems is advertising. While providing consumers with effective information, I believe that more friends will feel helpless and angry because the projector product audience is narrow. I have given many profiteers opportunities to pull customers through some false advertising, and then mislead consumers to buy inappropriate products. The following are common false advertisements.
Support HD
This is the most seen in the current advertising content, and it is also a place that consumers are more likely to ignore. Generally speaking, the mainstream performance of current business education projection products is based on XGA resolution. Non-widescreen products cannot support HD and full HD display. The profiteers use the weaknesses of consumers who have not touched the projection, claiming that they The product supports HD content, but in essence its effect is limited to "can display"!
At present, the products on the market usually include HD 720P (1280×720) resolution and full HD (1920×1080). Only panels with this resolution (and above) can fully support HD. And full HD content, other resolutions are only compatible and able to display, so be sure to pay attention to users with high definition requirements.
Projection size
In the general publicity, the projection size problem is not mentioned, but this is precisely the biggest advantage of the projector. Since the commonly used projections are enough to complete the mission in size, there is not much mention of the size problem until The emergence of miniature projection and new light source products.
The new light source products represented by micro-projection have only appeared in recent years. Due to technical imperfections, they have encountered bottlenecks in brightness and indirectly smoothed the advantages of projection products, resulting in the dilemma of their scale application. It is for this reason that many unscrupulous JS exaggerate their projection size when selling micro-projection products, or do not emphasize the environmental conditions of their corresponding size, misleading to consumers, what is more painful than the picture shrinks 10 times What about it?
Color, contrast effect
After the definition of the projection picture is guaranteed, the development of the projection begins to turn to the effect, and the parameters such as contrast and color come into being. Similarly, because the color and contrast also lack industry standards, it has become the best for profiteers. One of the ways. Let's not say whether each projector can display millions of colors, and the 6-segment color wheel in the form of RGB×2 is a big surprise. As for the contrast, it is more clear, but those products that use dynamic aperture technology are basically no lower than the 5-digit level, and Epson has raised it to 200,000 to one...
For the projector, the life of the bulb is very concerned by every user, especially the price of the original brand bulb is quite horrible. It can be said that the projection bulb with a price of thousands of dollars is the main expenditure of the projection players. The main consumables of the projector product, it is directly related to the cost of the user's later use.
At present, the projection bulbs with traditional light sources usually have a nominal life of 2000-6000 hours, but most of the products that can reach 6000 hours are tested under the ideal state of energy-saving mode. The practical application is the use of ECO to reduce the brightness. Mode, here we have to look carefully, after all, the choice of a lamp life of 6000 hours can basically be more than two years (usually) than the usual 4000 hours, and the use of business can also significantly reduce expenses and maintenance.
Of course, in addition to seeing the conditions of use of the lamp life, the light bulb also recommends that you buy the original or designated dealer's products, do not greet the cheap to buy parallel and miscellaneous products, in addition to these products will have matching and brightness attenuation If you wait for the problem, the life expectancy will be greatly reduced, and even the nominal life expectancy will be reduced by tens of times. Therefore, I hope that everyone will buy it carefully.
Machine life
In addition to the life of the lamp, the overall life of the projector product is also worthy of attention, including the aging of the panel and the replacement of the dust filter, especially to avoid buying the prototype! As we all know, the sample opportunity is displayed in the store for a long time. It is difficult to control whether it is aging or dustproof. If the bulb data is cleared, it is difficult to check. Here, everyone should carefully observe the eyes.
Identifying prototypes is nothing more than the usual method below. First of all, it depends on whether the lens part of the machine is stained. In addition, the purchase must be on the spot and tested. Check the inner and outer packaging of the projector and the packaging of each accessory. The surface of the product is scratched, dusted and packaged. Be careful, be careful. In addition, the film and projection feet, these two changes are difficult to repair, the interface part should also pay close attention to.