Tip 1: What is a Digital Camera Matrix

Hi-tech

Tip 1: What is a Digital Camera Matrix

Matrix - key technical specificationany modern digital camera, and the quality of the images directly depends on its quality. Although there is an opinion that high-quality optics and the availability of all kinds of accessories - from light filters to external flashes - is much more important than the "carcass" of the camera, when buying on the matrix should pay special attention.

The essence of digital camera matrices

At the end of the XX century, analog cameras replacedcame digital models. Their main difference is the use of built-in electronic photosensitive sensors instead of film. The matrix of the digital camera converts the lens projected optical image into a digital signal. It depends on it and the details, and the overall quality of the resulting snaps. All the matrices consist of many tiny photosensitive elements - pixels, each of which forms one point of the image. The sensors differ in design: they are full-frame, back-light, with buffering of a frame or columns, with progressive or interlaced scanning. One of the main characteristics of digital camera matrices is resolution, that is, the number of pixels. As already mentioned above, each of the pixels perceives light and converts it to a single point in the image. The more pixels - the higher the detail. However, it should be noted that the pursuit of copies with the highest resolution is rather meaningless, since it is impossible to notice with a naked eye the difference between pictures taken on a camera in 10 and, say, 12 megapixels.

Size matters

Another important parameter is the physical dimensionsmatrix. The more it is, the better, because more light gets to the larger matrix. That's why compact amateur "SLRs" are much inferior in quality to the size of professional cameras. The more light gets to the matrix, the purer and more natural will the colors look and the less unpleasant noises. However, the problem of noise manufacturers have managed to solve with the help of additional sophisticated technologies (algorithms of noise reduction). Finally, cameras with large dies provide a shallower depth of field. In practice, this means that the photographer is able to select the subject of photography, adjusting the depth of the sharply portrayed space. That is, in simple terms, everything that is superfluous will be pleasantly blurry. Unfortunately, manufacturers rarely specify the size of the matrix in millimeters, but they denote the parameters in the vidicon inches, for example, 1 / 3.2 ", 1 / 1.8", etc. Here it is important for a simple buyer to know one thing: the larger the number in the denominator, the smaller the matrix.

Tip 2: How to choose an inexpensive camera

Usually when buying camera we are faced with a huge variety of modelsand producers. First of all, the buyer pays attention to the well-known brand, which has excellent characteristics. But at the same time, there is a lot of overpay for a reliable brand. Therefore, when buying a camera, you can be sure that by choosing a device with the same parameters as a well-known company, you will get the goods no worse. But at the same time, there is always a risk. In order to choose an inexpensive and high-quality camera, you must know the basic selection criteria.

Instructions

The matrix is one of the most important moments when buying camera. Each technology has its own specialAdvantages and disadvantages. But the principle is the same everywhere - the larger the matrix, the better the image. • The CCD matrix has better quality and sensitivity to light • CMOS matrices are more common, they do not require large production costs and have lower power consumption.

Pixels. This parameter depends on the detail of the photo, the size of the resulting picture. For photos in the family album is quite enough 2-3 megapixels. In the event that you buy a camera for amateur shooting, you will need 3-5 megapixels.

Lens. The main characteristic of the lens is the zoom. The zoom is digital and optical. The photos taken with the digital zoom are of a lower quality, since the images are enlarged after the photograph is received. The principle of the optical zoom is that the object is approached by changing the focal length of the lens.

Focus range. To get the best macro, the camera should have as little focus as possible. The minimum focusing distance is indicated by the focusing distance in macro mode.

Flash. For anyone camera the need for an outbreak is undeniable. But when choosing a device, you need to pay attention to the flash adjustment function (it will allow you to photograph objects at night even from a close distance).

Memory camera. The camera does not always have enough internal memory. Therefore, the camera must have the ability to save photos to external media.