Rus Articles Journal

How to choose a digital camera?

Now the huge choice of various digital cameras of different firms - producers with various characteristics is presented at the market. It is so difficult to orient and make a right choice. Especially, if there is no experience of communication with in figure . This material is urged to help you with it.

The first what it is necessary to look at the choice of a chamber at, after design of a box, is how many in it it is squeezed megapixels. Or megapixels. It as to you is pleasant more.

shows the Number of megapixels how many points (pixels) the photomatrix which will transform the image caught by a lens to digital representation contains. By itself, than there are more such points, especially the result turns out qualitative and the it is possible to print with a big format the digital photo. Permission of a matrix - an indicator objective, but not absolute as quality of pictures is often influenced also by other features of a chamber. Besides, from some producers tendency to a mukhlezh is observed: their devices write down more pixels in the file, than permission of the matrix used in them allows. At the same time, naturally, the image is enlarged, and its quality in proportion worsens. To get on such arapstvo it is offensive therefore before purchase of expensive chamber at first get acquainted with responses of those who already got it. In avoidance.

Let`s say we decided on a matrix and megapixels. Now we will address a lens - that device which provides hit of the image on a matrix.

Qualitative optics is the main condition of receiving a qualitative picture. Through a bad lens you do not receive the good picture. By itself, in optics the correct glass has to be used, exclude chambers with plastic lenses from consideration at once and unconditionally.

The second aspect of the choice more difficult and less subject to a regulation - possibilities of a lens as regards an image transfokation. Transfokation ( zoom ) - this increase in the subject which is in the field of shooting with means of a lens. Removing, for example, a portrait of the person, you can just approach it rather close, but the majority of lenses do not allow to remove close ups without distortion of the picture: on a portrait disproportionately increased nose turns out, part in sides of an eye, the person looks inflated, and a forehead - low. By means of a transfokation (in other words - optical arrival regarding) it is possible to get rid and receive the large and undistorted image from all these troubles. Besides, the transfokation allows to play interestingly plans and scales, combining objects which are at different distance from a lens in one shot.

Transfokatsionny parameters of a chamber are defined by coefficient of frequency rate of a transfokation - that is, that, in how many time the lens can enlarge the image getting on a matrix. Standard coefficient of a transfokation - 3kh or 4kh (triple or quadruple increase), and some especially powerful chambers provide also tenfold increase. At the same time pay attention that it is about an optical, but not digital transfokation (which digital zoom ) . The digital transfokation is no more than program extension parts of the image on all matrix. There is it, unlike a transfokation optical, always with loss of quality of the picture therefore the digital transfokation optical does not replace at all and is present at a chamber only as minor additional function.

The good camera has to be not big or small - it has to be convenient and functional. Therefore too weighty and heavy chambers, though give to the owner certain technical advantages, with themselves are inconvenient for carrying and more pertinently look on studio supports. Superflat chambers, in turn, cannot provide rather flexible management of optics and or do not allow a transfokation at all, or allow, but in embryo. And it as we already established, not too - that is good. Besides, at all compactness of present equipment, in too small case it is impossible to squeeze many important and interesting components. The ordinary user, as a rule, quite accepts a chamber of the moderate sizes - rather compact that without ultraboundary efforts to carry it with itself, and rather volume to contain all necessary technical equipment.

Upon purchase of the camera consider also in what conditions you will exploit him. For example, if you are going to go hiking with a chamber, it is necessary to think of acquisition of the device with the case which is well protected from damages and penetration of moisture - and so on.

The majority of cameras available nowadays write down the made pictures on removable cards of this or that type. Some of the existing models work only with own built-in memory - such devices differ in smaller flexibility and do not allow to replace, for example, quickly on the run the filled memory or to increase rigidly set memory size by new. Probably, it is worth preferring upon purchase more flexible option with removable cards.

of the Device of memory for digital cameras now violently develop - recently, for example, was declared an exit a flash - cards with a capacity up to 4 gigabytes though still quite recently as big achievement was considered 128 - a megabyte card. Using new a flash - cards in the device, you will be able sharply to increase thanks to it the volume of his memory - and, so quantity and quality of pictures which you will be able to make and keep. By the way, to estimate snimkoyemkost a flash - cards on its volume it is easy: if to take the approximate volume of one qualitative picture in the JPEG format for 1 megabyte (and it approximately is true), then the number of the megabytes of its capacity specified on the card just and corresponds to number of pictures which it can to hold ...

of the PCMCIA Card are convenient for users of laptops which are often equipped with PCMCIA - the socket; such card can just be rearranged from the device in the computer which will perceive it as the new device of memory. It is convenient, however from - for rather big PCMCIA sizes - cards they are used generally in enough advanced professional reflex cameras. More compact and difficult devices use a flash - cards.

Flash cards are issued two types - so-called Type I and Type II. These types (the II card slightly thicker) and potential capacity differ in the linear sizes (the II card contain bigger memory size). A flash - cards of I type are now, perhaps, the most widespread devices of memory for digital cameras, but with reduction in cost a flash - cards of the second type the situation can change.

are Less widespread the SmartMedia cards (have no own controller and approach only chambers which are able to work with them) and to Sony MemoryStick (are compatible only to chambers of Sony so far).

the Flash - the card can be taken out from the camera and to throw from it data in the computer via the adapter which is connected besides PCMCIA - to the socket, however is much simpler to connect (cheaper) to the computer your camera and to work with pictures, without taking out a flash - cards from a chamber in general.

A good color rendition - the main requirement to any camera. To remove the picture in those flowers which are remotely similar to the presents the good chamber is not necessary - any is necessary. Also take such if the end result does not interest you. If you feel that color is something important for your alleged photocreativity, then it is necessary to approach a question responsibly. Fortunately, the vast majority of digital cameras does not threaten us absolutely with uninvited special effects, and subtleties of a color rendition become noticeable and really important for skilled pictorialists - which are already quite capable to find and estimate merits and demerits of concrete models. And to share with the others. Therefore the main council - listen to experts. If the chamber suits them, then and it with a high probability will suit you. Consider

that some chambers do excellent pictures in the afternoon under the open sky, but it is shameful fail when shooting in an interior with artificial lighting - and vice versa. Therefore the more precisely you represent, will use how exactly the camera, the better will be able to test it on the modes necessary to you.

Its compatibility with your computer will always be an important point at the choice of a chamber. Really: the scenes shot tsifroviky should be dumped on the winchester, to process, store, send to the press.

Practically any modern chamber is supplied with sockets and the cable corresponding to them for connection to the computer. Only types of the sockets installed on it differ. Thus, the main task of the buyer of the camera - to be convinced that its computer and the acquired chamber has compatible ports (or, as a last resort, there are adapters - the adapters allowing this compatibility to reach).

The digital camera - very power-intensive piece. Only one flash is capable to exhaust quickly and dry a set standard polutoravoltny finger-type batteries which are assumed as regular batteries for considerable number of chambers of a consumer class. Of course, such batteries are cheap and available, but imagine that you should change them that more often than more you will photograph. In some models they are enough only for one and a half - two tens pictures... You will carry a stock with yourself? Or you will count what you will always manage to buy in addition new batteries?.

the Problem is solved by acquisition of the camera which is capable to work from nickel - metalgidridny accumulators (NiMH, Nickel - Metal Hydride). In - the first, they have much more decent capacity, in - the second, their charge can be renewed by means of the special charging block. Having two - three sets of accumulators (one in a chamber, one on recharge and one in a reserve), you will be almost guaranteed that the chamber will lose power food at midpoint.

Still big capacity have compact lithium - ionic accumulators (Li - Ion, Lithium Ion) - the truth, they are much dearer.

to Any beginning photographer is better to stop the choice on the camera with power power supply from the charged accumulators.

And, at last, some of the most general councils for beginners.

In - the first, do not try to buy most - super - a puper - new model. It at least too expensive - time, is not rolled by professionals (so, and shortcomings of model are not revealed) - two, and for the neophyte it is superfluous by opportunities - three. At the same time chambers of year prescription managed to get accustomed in the market, to acquire reputation and to fall in price considerably. At the same time on the power and opportunities they lagged behind in total for a year - it is not terrible at all, even pros do not change the working tool every season. Many of them prefer the tested reliable chamber to hot novelties and for years remove the habitual camera, at the same time without losing anything. And the beginner and even less so has no need to run ahead of the engine.

In - the second, do not try to buy the " camera; more simply . Even if you do not need all set of opportunities, settings and cunnings of your chamber at the beginning, and the " mode will be the most actual mode of shooting; Auto but such chamber itself will stimulate growth of your professionalism. If in the device some interesting opportunity, then the inquisitive person by it by all means at least once yes is put will use - and by that will gain new experience. And it never to the detriment. And, at last, one more argument: the difficult chamber as it is paradoxical, is easier to use - it is capable to resolve independently the most part of issues, without demanding at the same time intervention of the owner.

In - the third, whatever chamber was bought - new or second-hand, advanced or it is simpler, - surely check that all relying personal belongings were applied to it. Cords are necessary for dumping of photos on the hard drive, disks with family as programs which are installed on your computer and the user`s guide, all hinge plates and accessories stipulated in the complete sheet allow to work with images on the camera (even if you are not sure that they will be necessary for you). And surely check the camera in business! How many you paid, you paid enough to receive an efficient chamber, but not the useless electronic block in the magnesian case.

By itself, you the normal person will also check existence of a guarantee and terms of return in case of marriage - we will not even remind you of it.

Here, apparently, and all.

And now - forward, the reader! Get up courage - and welcome to the digital world.