Cameras Avoid Pits

Speaking of cameras that are not recommended, I don't think we can buy them second-hand until we stop production. Although it is cheap, the degree of wear and hidden problems are unknown, and the performance is also very backward. The purchase and replacement of accessories is also a problem, and it is easy to buy refurbished machines.

In addition, the popular CCD camera (card machine) has poor image quality and poor imaging; CCD has two inherent defects. One is the slow speed. After all, a processor has to process tens of thousands of pixels of information, and the amount of calculation is self-evident. The other is calorific value, which directly leads to serious CCD noise with high calorific value.

The problem of CCD is usually caused by a single pixel, and there is no other way except invalidation (many CCD cameras will have a line in the image after taking pictures, that is, the whole line of pixels will be scrapped after CCD problems), while the bad pixels in CMOS are generally single and will not affect the overall picture. (There is a problem with one in ten thousand individual pixels, and normal shooting is completely unaffected. )

CCD has high cost, low yield, slow speed and poor sensitivity, which can not meet the needs of high-speed shooting and has a great impact on the quality of night shooting. Therefore, with the progress of CMOS technology, it is a historical necessity for CMOS to replace CCD.

Charge coupled device

Don't buy a so-called student computer.

Compared with other consumers, students and elderly users are more interested in photography, but their budgets are limited. Therefore, some merchants attach great importance to this market and have introduced the so-called "student camera", whose main feature is low price. And improve the shooting performance of mainstream cameras, high-pixel, high-definition cameras and so on.

There are also 4K cameras that students like to buy, many of which are said to be changed by driving recorders, and the picture quality is really poor.

With the increasingly strong shooting performance of mobile phones, cameras have gradually become a niche fever product from the previous three digital products. In order to widen the gap with mobile phones, the performance of cameras is getting stronger and stronger, and Quan Huafu has almost become a standard configuration. Correspondingly, the price has become very high.

Many people who are limited in budget and obsessed with camera performance or photo ceremony will choose to buy cheap second-hand cameras or the so-called "student cameras" mentioned above. But this is not wise, because these cameras and mobile phones used now have no advantage in shooting performance, even worse than mobile phones.

Instead of buying these products, it is better to make good use of the current mobile phone, watch more shooting tutorials and concentrate on learning photography. When the performance of the mobile phone really can't meet the shooting needs, you can consider buying a professional camera in one step.