Reviews Technology: How to choose a digital camera ?

Get a digital camera become almost essential to our days. However, it often faces a serious dilemma: which device to choose. you can saying that this will depend, first, the use we want to do, but there are other criteria that will guide your choice to acquire the model with the functionality and features that meet your expectations.

Many of people believe that digital camera is the resolution of the sensor. Already, he must know that not talking about solving a sensor but for definition. So for those, a high definition is the better the quality of their clichés. Well they are Half wrong, but it is not at all thing, because this is certainly true is that the size of the image depends necessarily the definition of our sensor digital camera.

For example, a sensor 3 mega pixels gives an image size of 2048x1536, then a model with five million pixels may have obtained pictures of 2592x1944 cons 3264x2448 on eight mega pixels. However, it is possible to achieve much better picture of invoice with a camera at 5 mega pixels with a different definition of a larger. Because, other settings heading directly into machine account, such as compression quality. He must also know that to qualify a digital camera "good", it must satisfy other conditions we will try to detail.

Optics

Optics is one of the most critical elements of a camera. The camera with optical zoom has the enormous advantage as allow different frames from a single location and adjust a frame, depending on the scene photographed.

Main data to take into account: the amplitude recorded 2x, 3x 10x etc.. Thus, a 3x zoom is usually a 35-105 mm silver. From 35 mm and below, we speak of wide-angle, allowing a broader vision, useful, For example, in decision views of landscapes or pictures of night while it is sorely missing in perspective.

The quality of the screen

To be sure of succeeding his photos, it is recommended to have a camera with a bright screen. Three factors help determine if the screen of your device is good: its dimensions generally expressed in inches (1 inch = 2.54 cm), the definition contained in pixels and persistence it takes to see the eye. Beyond the sheer size, the ratio size / definition that is most crucial. For more definition, the higher screen will prove accurate. The ideal is to try the screen as a spot to check its visibility in bright light. In the afterglow, it is to verify that the display is quick and can follow a moving subject without too much difficulty. Some devices with low-end monitors have jerky images. In this case, if the object or person to photograph is fast enough, he can pass the target without appearing on screen!

The tripping time

Most of the time, we are disappointed to see that we missed our picture for the simple reason that the sensor did not trigger in time, especially when the subject is photographed in motion. Thus, the picture is blurred. For this reason, the time gap between the trigger and the actual capture of the photo unit, commonly called the latency is a parameter to consider when your digital camera. If the image content is essentially immobile (fixed objects, landscapes, portraits ...) if it does not really matter. It must only be careful not to stir up taking the picture. This parameter is constantly growing. The only way to evaluate it is to test the device.

Storage capacity

It must be said that the interest to have a digital camera to capture some event, preferably by taking over pictures . For this, we must have a sufficient storage space
on his device. A space that is on the definition images. Plus it is, the greater the memory size must be important. Often the size of the internal memory of the camera is too small, including models entry level, therefore, the acquisition of a removable card required. Each camera is compatible with a type of memory card (Compact Flash, SD Card, Memory Stick and xD,.. Card are the most common), only few are able to read more. With a 3 mega pixel (MP), a 128MB card will be largely the case. A model to 5 million will require the acquisition of a 256-card see 512 Mo. With the generalization of models 8 and 10 MP, 512 MB is minimum and 1 GB is a significant storage space.

The battery

If you want to enjoy this camera . It is necessary to be able to use for long time.
The autonomy of digital cameras is constantly improving due to more moderate consumption of its components. However, it is wiser to buy NiMH batteries to avoid any nasty surprises with batteries supplied with the camera, even better if you buy Lithium-Ion batteries which tend to generalize. Great advantage, they last longer and their efficiency is much higher.

The intensity of the battery, expressed in mAh is also an important factor over the figure, logue is the most load.

So it'll just take notes and refer you to store most pocket sure to read the characteristics of the camera that you plug in the most marks are different, as are the models then , made the right choice.

The format of the image

Besides the resolution of the image, another test determines the space it occupies in the device memory. This is format. Three image formats are most known: RAW, TIFF and JPEG. Present in the top of the line, the Raw is a format that captures the raw image before any processing software by the device. Its use involves the installation of the software manufacturer to be able to view images on a PC. More widely, the TIFF format is also a non-destructive. However, this format gives photos that weigh too heavy. Quickly enough to fill a card. But this format tends to disappear in favor of JPEG. This compression format available in two or three levels on the entire device, it offers the advantage of reducing the weight images.