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The digital cameras, like conventional cameras vary with cost and quality, and of course all those variations in the middle seem exactly alike. User want the cameras with will capture good quality pictures. There are many factors to consider when buying a digital camera. Every part of the camera should be perfect to be a perfect camera. In addition to the conventional camera components, digital cameras have the equivalent of a small computer and scanner in them. And these additional things should also be perfect to be the camera perfect one. Before purchasing a camera should think all the components that play role to make a picture perfect.
LENS
Lens plays most important role for a good picture. Most midrange cameras have a single lens that may or may not zoom; some have snap on attachments to create a macro or zoom lens. Macro option is necessary to shoot objects at very close range (~1.5 feet). If you want the ability to change lenses, you'll need to get a high end camera which is basically a 35mm SLR type camera with a scanner put in where the film usually goes. These cameras permit the use of many diverse lenses, as well as other accessories, but of course the lenses are an added expense.
IMAGE QUALITY
Look at the actual image from the camera, before using a retouching program. Is it washed out? Is it blurry? Are the colors true? Many reviews will have samples of actual output. Look at them closely, and remember that much of the time, these are in a studio setting and are probably "best case" situations.
RESOLUTION
Unless the images will be used for printing in magazines and such, the resolution on most midrange cameras should be fine. Consider what the camera will be used for: web pages, quick shots for presentations, pictures for figures for publication, etc. If most of the shots will be for web pages and presentations, don't spend $10,000 for a professional camera because a print quality shot is needed once a year.
WEIGHT
Camera size and weight too matter. A big sized camera many not be handy one. And camera with heavy weight may not good for carry with. Users prefer to use the handy cameras with light weight. FLASH: flash is another important factor in capturing the good image. Basically in night times. . Many midrange cameras are about the equivalent of an ISO 100, and don't shoot well in dim light. Upper end cameras vary a lot in the ISO equivalent, so you may or may not really need a flash.
NUMBER OF IMAGES
How many images can a camera take before you need to download the images onto your computer? The number of images may not be a problem if you are shooting near your computer, but if you plan to take your camera away from your computer, make sure it will store enough images. Several cameras use a PCMCIA type card, which is removable. These cards are not inexpensive, but they do give the flexibility of allowing you to change cards and continue shooting.
These are just a few things that may narrow down the choices a bit. Other things may be just as important: can it attach to a tripod? Does it have a SCSI interface? Does it have a PCMCIA card? What software does it come with? And don't forget what does it cost? We've included a list of manufacturers and some reviews of cameras to help make a more informed decision. There is also a comparison chart with a few of the issues above, and links to the individual pages for each of the cameras we've compared.
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