9/18/2011

Buying a Digital Camera. A Few Tips.

By Dmitry Vasenyov


Choosing a digital camera as other technique must be done by studying its technical characteristics. It is advisable to hear feedback of present owners of cameras, as well as to compare the stills made by various cameras at the same time in the same place. But now we will consider technical characteristics, as they determine whether the camera will be able to give you a colorful image.

There is a view that the more pixels, the better the image quality is. It is erroneous opinion and misleads many people. This characteristic is responsible for a maximum resolution of the photo that you can make by a device without losing quality. It is important to consider the size of the matrix, on which there are these pixels. Therefore, an amateur camera may have more megapixels than a professional one.

Picture quality depends on the matrix - a unit with a certain amount of photosensitive elements (pixels). It is responsible for color rendition, noise, transmission of small details, and depth of field. The number of pixels does not always correspond to the resulting image.

A serious approach has to be to the selection of optics. In the first place, look at such an option, as zoom: it may be digital or optical. Good photo cameras have both, but low-price cameras have only a digital zoom. Digital zoom is implemented by increasing the still after photography and cutting it to the necessary size, thereby losing quality. The optical zoom is realized with the help of change of focal distance of the objective-glass.

Digital cameras without flash are inapplicable for use in low light conditions. Cheap models are equipped with integrated flash, which is somewhat helpful, but sometimes, conversely, can give too much light. In such cases it is expedient to apply digital cameras with a pluggable external flash.

The main thing when choosing a digital device is to determine for what purposes you buy it. And on this basis you should decide what characteristics are important for you.




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