is a normal camera, but with many advantages. These include the best image quality and the ability to store in memory a number of similar images which fit on a reel.
Later, photos may be passed to the computer, thus avoiding the cost of reels and developed. Once in the computer the possibility of retouching is infinite, choose the frame, change colors, use different filters, etc.
Today, the only limitation is that current home printers do not reach the image quality that provides a photograph by positive on paper, in most cases.
resolution digital camera that replaces a standard must be at least 1,280 x 960 pixels real optical resolution (that is 1.2 Mega pixels ). This allows for excellent prints up to 15x23 cm in some cases, ie to print a photo to a 10x15cm size is more than enough to use 2 Mp , with what is in the amount of Megapixels therefore differs from another camera or camera quality , not fall for the nonsense of "this camera of 7 Mp is better than the other because it has 5 Mp " , value or property in a digital camera the quality of the lens, and is what really differentiates each other both in quality and price.
lenses The most important piece of the camera. Two kinds of lenses:
-Plastic. Own cheaper cameras. They are very susceptible to scratches and even at its best do not get as good pictures as a
-crystal glass. Their benefits are better. The cameras use high quality glass lenses "spherical" (not round), which reduces the distortion caused by lenses
circular.
Within the crystal can differ from one another according to the manufacturer's quality and use of the camera, for example . a webcam is not implemented for photographic lenses of lesser quality even of glass, and within a digital camera lenses we can find good manufacturers like Sony , Canon, Nikon or Kodak , and lower quality as in the case of Benq, low range Olympus, Casio or low range Pentax.
in general is clearly seen in the price, a camera worth € 100 shall not the same quality of a lens worth 200 € (same or similar amount of MP and other features)
display systems are typically cameras equipped with two viewers: an optical viewfinder and a screen viewfinder LCD . Zoom
can adjust the distance at which the subject appears in the photo. The most cameras have two types of objectives:
-Optical. It is more important. The camera uses a motorized lens moves back and forth to zoom the object to photograph.
-Digital. The camera takes a part of the picture, the broad and ignores the rest. The resulting image is of lower quality.
I comment a little battery issue as I asked destroyer in the comments:
2 types:
Battery Rechargeable Superfine : This type of battery has more battery life than a type battery, in addition that the charging time is less, on the other side to be of small size makes it feasible that cameras are much more compact making them more comadas carry, even pudiéndolas keep quietly in a pants pocket of a . Battery
type "battery": battery this is much more economical and has the advantage that we can buy spare parts at low cost (in the previous case is less straightforward get a spare battery if that integrates camera breaks we can not use it until we find a well). The use of a battery in these chambers than rechargeable is not viable and that after several shots are exhausted, so we buy rechargeable batteries for consumer spending is acceptable, this is a value to increase and take into account the price of the camera , also that even with this type of battery the duration is usually less than a battery incorporating superfine otherwise the camera does not have to be of lower quality compared to a battery that integrates superfine.
When choosing a camera or other type of Segou to the type of battery , depend on the rest of features have the camera or if you need or want the camera is a reduced width, or otherwise not care about the size of the camera or the batteries last something less but something we want to go cheaper.
There are different types of memory card flash depending on the brand of camera, the most widespread and most economical is the SD , Sony uses its own format a little more expensive, Memory Stick and Olympus XD the something more expensive and less common than the 2 above (including card readers for PC is common find many of them do not read the format of Olympus XD ). Some time ago it was very common to find houses that fit the type memory cards Compac Flash but this type of card each day is more into disuse
SAI = 
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