Traditional Culture Encyclopedia - Photography and portraiture - What chip does 99 Fuwa V30 camera use?
What chip does 99 Fuwa V30 camera use?
Judging from the composition of the camera, the quality of the camera is mainly determined by the hardware:
1, lens
The lens is a lens structure, which consists of several lenses, usually plastic lenses or glass lenses. The lens structures commonly used in cameras are: 1P, 2P, 1G 1P, 1G2P, 2G2P, 4G, etc. The more lenses, the higher the cost; Glass lenses are more expensive than plastic lenses. Therefore, a good quality camera should use a glass lens, and the imaging effect will be better than that of a plastic lens. In order to reduce the cost, most camera products in the market generally use plastic lenses or semi-plastic and semi-glass lenses (i.e. 1P, 2P, 1G 1P, 1G2P, etc.). ).
2. Image sensor
Image sensors are divided into two categories: CCD (Charge Coupled Device) and CMOS (Complementary Metal Oxide Semiconductor). The advantages of complementary metal oxide semiconductor CCD are high sensitivity, low noise and high signal-to-noise ratio. However, the production process is complicated, the cost is high and the power consumption is high. The advantages of CMOS are high integration, low power consumption (less than 1/3 of CCD) and low cost. However, the noise is relatively high, the sensitivity is low, and the requirements for light sources are high. Under the same pixel, CCD imaging is often very transparent and sharp, and color reproduction and exposure can ensure the basic accuracy. However, CMOS products often have general permeability, weak color reproduction ability and poor exposure. Therefore, when using a camera, you should pay more attention to skills, especially products using CMOS chips: first, don't use it in a backlight environment (like CCD), especially don't directly face the sun, or your camera will have a tragedy of "magnifying glass burning ants". Secondly, the ambient light should not be too weak, otherwise it will directly affect the imaging quality. There are two ways to overcome this difficulty, one is to strengthen the surrounding brightness, and the other is to choose products that require the lowest illumination. Now some cameras can reach 5lux. Finally, we should pay attention to the rational use of lens zoom. Don't underestimate this. Through correct adjustment, the camera can also have the function of shooting chips. Among the digital cameras currently on the market, CCD and CMOS are basically equally divided. Advanced image control technologies, such as automatic gain enhancement technology of image light source, automatic brightness and white balance control technology, color saturation, contrast, edge enhancement and gamma correction, can achieve the same effect as CCD cameras. Limited by the market situation and market development, there are only a few manufacturers who use CCD image sensors for cameras, mainly because of the high cost of using CCD image sensors.
3. Digital signal processing chip (DSP)
The choice of DSP is determined by the camera cost and market acceptance. At present, the technology of DSP manufacturers in designing and producing DSP has gradually matured, and the technical indexes are not much different, but some DSPs need to be further improved in subtle links and drivers.
4. Image Resolution
The image resolution/resolution of a camera is what we often call a camera with many pixels. In practical application, the higher the pixel of the camera, the better the image quality, but conversely, the higher the pixel, the better. For the same picture, the higher the pixels, the stronger the analysis ability of the image, but the more data is recorded, so the requirements for storage devices are much higher. Therefore, the current mainstream products are used when choosing. Due to the influence of camera price, computer hardware, imaging effect and other factors, the cameras on the market are basically sold at the level of 300,000 pixels. In addition, because CMOS imaging effect is not ideal at high pixel, CCD camera is still the dominant market for high pixel cameras. It is worth noting that some resolution marks refer to the interpolation resolution that these products can achieve by using software. Although it can also improve the accuracy of image acquisition, there is still a certain gap compared with the hardware resolution.
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