Basically a digital camera is a device used to capture pictures without the use of film. The lack of mechanical parts has meant that the size of these cameras is only dictated by the size of battery needed to power them. The images are stored in a format that can be read by most modern printers, computers and even mobile phones for example. Unlike film where the image is captured on light sensitive film, these store the images as pixels that convert to computer bytes.
Many similarities exist between the two types of camera because lenses are still required to capture light just the same as a film version. Using an electronic system, a lower specification digital camera does away with film although it is still capturing the light as with a traditional camera. Up market versions us a different system again with a charged couple device, or CCD, being the capture system which transfers the light into an electrical signal. The less expensive capture system called CMOS is generally in lower end cameras and probably won't replace the more expensive CCD although it does an admirable job.
CCD's are much more costly to produce than the CMOS devices, but by using the latter it has brought the cost of many models down considerably. The digital camera converts the light it receives like millions of minute solar cells and both the CCD and CMOS end up storing an image but just using a different method to do it. There is no need to feel confused by the range and functions these cameras have if you are armed with a few basic facts which are provided in this article. Image quality is the all important factor and the higher the resolution the more you will be able to enlarge your picture,you may find a model that is being superseded shortly - available at a discount.
Unless your budget just won't stretch that far, don't buy a digital camera with only a digital zoom or you will find pictures that aren't very clear when you print them,portrait shots that require 'framing' are so much easier with a an zoom facility. Although it shouldn't be a problem, opt for rechargeable batteries as they can always come in handy and you don't waste as much money on the disposable ones. Many people are just happy to point and shoot but if you want to do a little more then try to buy one with more functions,below are just a few examples:
Video captureWeb cam function
Image editing
With large megapixel models, image storage is another issue to look out for and a storage card will be necessary. Think 1GB as a bare minimum with today's high resolution models so if you're a photo junkie you can takes pictures of just about anything.
If you are going to be taking your camera everywhere, choose a handy and portable model. Why carry around something that is going to make you neck ache when it is not necessary, These are just the basic things you have to look for in a camera when you buy one. With their range of features and ease of use, digital cameras are the future of still image photography.
Thursday, December 18, 2008
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