What should I pay attention to when buying second-hand cameras?

1. Image quality is a very important technical index when purchasing. Refers to the resolution of the image taken by the camera, measured by horizontal resolution. The more lines, the clearer the image.

2. Zoom performance represents the flexibility of the camera and is another important indicator. By changing the focal length of the lens, the optical zoom effect is better. Of course, the bigger the multiple, the better. Usually, the magnification of optical zoom is between several times and 20 times. Some models of cameras can also increase the magnification of optical zoom through multipliers.

3. The number of functions is also an important indicator for choosing a camera. In addition to the necessary functions such as clock setting and various operation settings, there are also picture special effects, digital editing, faders, etc., which are almost necessary for all types of cameras.

References:

Baidu (the world's largest Chinese search engine)

Let the wooden fish and goldfish say:

How to buy digital cameras in Yi Bei?

Due to the huge difference in operating costs, the price of digital cameras in Yi Bei is obviously better than that in physical stores, which also gives consumers more benefits and wider choices. However, digital camera is still an expensive luxury, so it is not easy to choose a DC (short for digital camera) that suits your own needs and has high cost performance. Especially based on the huge demand space of digital cameras, various brands and models, especially accessories, are mixed in the market. Whether online or offline, there are integrity problems that need to be carefully identified and handled by consumers.

So, how can we buy a digital camera that suits our needs and has high cost performance on Yi Bei, and ensure the security of the transaction? Let's put aside obscure technical terms and explain in plain language from the choice of digital camera to the final purchase, hoping to provide you with some helpful information and suggestions. My own knowledge and experience are very limited, so please give me suggestions, criticisms and corrections from experts.

First, the basic essentials of choosing a digital camera-nine elements of machine selection and purchase.

Digital camera and traditional camera are quite similar in optical and mechanical structure, electronic exposure control and so on. The biggest difference between them lies in the difference of imaging medium and imaging principle. Digital camera is much more complicated than traditional camera in imaging and working principle. Because of this, there are various digital cameras with different functions on the market, which dazzles consumers and makes them wonder which one suits them and what they want.

In fact, as an ordinary consumer, you don't need to explore what the imaging principle of DC is. It is important to clarify two points first:

1. Choosing a digital camera itself is a trade-off process. There is no perfect digital camera, no matter how much you spend, you can't buy it.

2. What suits you is the best and the most cost-effective.

According to my personal experience, I sum up nine aspects that ordinary consumers need to pay attention to when buying DC as "nine elements of choosing a machine and buying a machine", some of which are light and some are heavy. For the convenience of expression, let's talk about it from important to secondary.

The "nine elements" are: use, price, lens, photosensitive element, shutter and aperture, pixel, economy, appearance and function, and brand.