How to send a circle if you want to sell camera housings

Looking not to add points is your fault Oh ~~~~~~ I think that understanding the customer's psychology is the most important thing. Principle one, the marketing of the product is technologically advanced is a hard indicator Digital camera, is the camera and video capture unit integrated into the electronic optical components. Currently on the market there are basically two kinds of cameras: one is used to connect to the computer and the use of digital cameras, the camera can directly capture the image, and then through the serial, parallel port or USB interface to the computer. The other is an analog camera, to be used in conjunction with the video capture card; analog camera can be generated by the video capture device analog video signals into digital signals, which in turn will be stored in the computer. The video signal captured by an analog camera must be converted to digital mode by a specific video capture card and compressed before it can be converted to a computer. Since the digital camera can be directly connected to the computer, it is best to choose a camera with plug-and-play functionality from the point of view of ease of connection. Of course, if you already have a video capture card, you can also consider choosing an analog camera. In order to make a convenient connection with your computer, digital cameras nowadays come with a connecting cable on the back. Through this cable, the digital camera can be connected to the computer by interface card, parallel port and USB port, and if you add a set of software that can capture images instantly, you can realize the live broadcast on the Internet. However, when you choose the interface mode, not just choose one, you must choose according to the purpose of your use of the camera. Usually the interface card type of camera is through the camera dedicated card to achieve, the manufacturer will be more for the camera optimization or add video capture features, image quality and video stream capture has a greater advantage. However, due to the manufacturers of interface cards of different designs, products can not be generalized, coupled with the price is not cheap, these products are worth the need to pursue a higher image quality users to choose. Most of the camera interfaces on the market now use the USB interface, because the interface products have always been plug-and-play, easy to use and be happy to accept, but also can save the lack of external power supply. But now the USB interface transmission speed is still not high, so to use the camera to get higher quality images, faster transmission speed, manufacturers still need to spend a lot of effort in technology to solve. There is also a connection is the parallel port method, the biggest advantage of the connection is that there is a high degree of universality, because basically every computer has a parallel port, but the data transfer rate is slower, the practicality of a big drop, but for the average user, it is still acceptable. In order for the camera to capture high-quality, high-definition images, we should be in the choice of camera, focusing on checking the camera's lens elements, because the lens is good or bad is the key factor affecting the image quality. Our general principle for purchasing lenses is that lenses made by more reputable manufacturing companies are better. In addition, due to the camera's imaging area and the area of the CCD or CMOS components, and different camera CCD components or CMOS components are not equal in area, so its imaging area is not the same. The CCD element is divided into two types of surface CCD type and scanning linear CCD type. Face CCD type camera CCD chip light-sensitive area for a rectangular array plane, the usual aspect ratio is 3:2 or so, with the advantage of fast capture speed. No special requirements for the shooting activities of the scene and have a common flash. Common 1 / inch, 1/4 inch, 1/3 inch, 1/2 inch and 18.4x27.6mm, 6.4x20.5mm, 9.2x13.8mm and several other sizes. Scanning linear CCD camera used in the CCD chip is long and narrow, that is, light-sensitive tiny cells evenly spaced in a row, unlike in the face array CCD as there are tiny cells evenly spaced in a number of columns and form a rectangular plane. Cameras with linear CCDs have extremely high resolution, but because of the scanning process, the higher the resolution, the longer the processing time required. When you choose, you should usually use a face CCD type digital camera, scanning linear CCD digital camera can only be used for still life photography. Compared with CCD components, in the same pixel, CMOS components are cheaper than CCD components, but the image quality produced by CMOS photosensitive devices is lower, and these components are usually used in analog cameras. Principle two, the product is a powerful goal of a good digital camera, in addition to the technical indicators must be excellent, but also must have a strong use of the function as well as control and management functions. Usually has a high resolution camera, has a strong ability to analyze the image, so the camera is powerful or not, will also be reflected in the camera resolution. Generally speaking, the resolution of the camera directly determines the size of the captured image can print out a high-quality picture, or in the computer monitor can display the size of the picture, the resolution is the purchase of digital cameras in the digital camera hardware indicators to determine the primary issue to be considered. Digital camera resolution depends on the camera in the CCD element or CMOS element chip on the number of pixels, the more pixels, the higher the resolution. In terms of similar digital cameras, the higher the resolution, the higher the grade of the camera, but the high-resolution camera generates a large data file for processing, processing speed of the computer, memory and hard disk capacity, as well as the corresponding software have higher requirements. Obviously, the larger the size of the digital photo to be printed, the need to have a higher pixel level of the digital camera. Nowadays, the resolution of mainstream products is designed according to 300,000 pixels, supporting a maximum resolution of 640 x 480, in this resolution can provide 15 frames of speed, the picture has a noticeable pause, and some blurred; when the resolution is reduced to 352x288 (100,000 pixels), the camera is generally able to provide a speed of 30 frames, so that you can see a very smooth picture, and in this kind of resolution, the picture also becomes very clear. In addition to supporting 640x480 and 352x288 resolutions, the camera can now support the ability to capture images still at 160x120, 176x144, 320x240, 704x576, and many other resolutions. The factor that has the greatest impact on image quality is, I'm afraid, the camera's video capture capability. Now the maximum resolution of the digital camera capture screen for the 704x576, in this resolution so far no digital camera can achieve 30 frames per second capture effect, and thus the screen will produce the phenomenon of jumping. Although many manufacturers in the marketing of their products, boast, boast their own camera in the highest resolution, to achieve 30 fps video capture capability; at this point you should pay attention to, can not easily believe that the deception of the tricks of the traders, we can do is to compare the same resolution, relying on a combination of hardware and software which camera can achieve the capture capability. Of course, we can not pursue the video capture capability, because the higher the video capture capability, it puts forward the requirements of the computer is very high, such as 30 frames / second video capture capability requires the CPU processing power fast enough, large enough memory capacity, the installation of the operating system software at least windows98; if your computer does not meet the conditions, even if you choose the camera's video capture capabilities If your computer does not meet the conditions, even if you choose the camera video capture capacity is also high is not helpful. The color of the camera and the ability to adjust the light source is also very important to the efficient work of the camera. This is especially true of the backlight compensation and white balance adjustment functions, as these are well controlled and allow the video image to play back harmoniously and naturally. The white balance adjustment function works similarly to the addition of a color temperature conversion filter for color photography. The purpose is to get accurate color reproduction, only the white balance control without the need to add color filters in front of the lens, using the circuit control method, divided into automatic adjustment and manual adjustment of two types of ways. You can choose the appropriate control method according to the use of different environments and requirements. In addition, the quality and functionality of the bundled software is also a key consideration when purchasing a digital camera. As the realization of camera functions and software support are inseparable, most cameras have a dedicated control program to achieve the most basic such as taking pictures, video, managing image files, settings and other functions, so as to serve as a tool for users to directly control and use the camera. Now, the vast majority of manufacturers will also be equipped with products such as video conferencing software, video chat software, video recording software, photo editing software, anti-theft detection and so on. Some of these software are often for beginners, for example, photo editing software will have a large number of templates and creative tools, even if the user is just in touch with the graphic editing can also be imaginative, post-processing of photographs; video communication software can guide the user to video E-mail, video telephony, and other applications; through these bundled software, the user can get more application programs. As the software for the user, its ease of use directly determines the actual use of the user's feelings, so we must check and compare the function of the randomly attached software is good or bad. Principle three, brand, service should be emphasized In addition to the above said camera technology, function, we should also pay attention to some external factors when buying, such as: product design, cost-effective, brand and after-sales service and other aspects of the content. In fact, due to the production of the camera's technical content is not high, if only from the internal performance comparison, the various brands of cameras is very difficult to distinguish between high and low up and down, therefore, these external factors mentioned above but often become the main object of consideration when people buy. For example, the appearance of the product is an important factor affecting the choice of people, the camera as a new video equipment, its user base is still mainly those who pursue the fashion of the computer novice, therefore, in the case of performance is not comparable, there is no reason not to choose a beautiful or very stylish appearance of the camera. In addition, you must also consider the following factors: 1, the manufacturer's company image and reputation. The main thing is to do a more comprehensive understanding of the manufacturer's advertising, service commitment and reputation; 2, the manufacturer's marketing service system is perfect. Understand its sales, service distribution network is sound, do not be in Chongqing problem products have to run to Shanghai to solve. 3, to understand the situation of other products operated by the manufacturer. This point for your choice of digital camera, will play a good role in reference. Principle four, to be enough to use as a guide People buy things mainly for the purpose of application, and enough to use as a principle guide. In your choice of a digital camera is the same, each product has its own unique application areas, some businesses use the characteristics of its hardware equipment, in the shooting of captured images on the basis of adding a number of software with application value, such as image e-mail software, audio-visual chatting software, simple video editing software, with a variety of software, you can shoot the scene, you can use the e-mail function, you can With these software programs, you can use e-mail function when shooting scenes, make various kinds of simple edits to the captured images, and conduct video chatting and many other functions. When choosing a camera, it is important to be clear about the purpose of your purchase, so that you can use the application to guide your consumption, which is inexpensive and can fully meet your needs. In addition, when you buy a camera, you should also be based on the requirements of the use, as well as the availability of funds to first choose the brand, and then in the same brand and then compare the advantages and disadvantages of the price, the price of the performance may be higher than the price of the performance of the lower some better. But the price of the brand is nothing more than a subjective feeling, and to really choose a good digital camera, we should carefully choose a good focal length combination. Finally, I would like to remind you is that your choice of camera must be with their own computer system to form a complete shooting system to use. In the same system, a variety of equipment quality indicators must be consistent with each other, if you choose the indicators are not consistent with the equipment, the end result, inevitably, can only achieve the lowest of these indicators, then, the indicators of the high part of the equipment spent on the waste of money.