An Introduction to Digital Cameras
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by: reshader
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This article intends to show a few basic information about some of the aspects of digital cameras.
In broad terms, photographers can be cathegorized into home users (amateurs, hobbyists) and professional ones. Because of today's technology, it's hard to cross a line between them, and all because of the relative affordability of powerful digital cameras. Everybody that has a digital camera, a good printer and a computer can make high quality images with a few clicks of a button. However, even with digital cameras, there are many aspects of the techniques involved that can alter the quality of images, and this together with the fact that most of the people don't have any editing skills for processing the image after it was taken, makes the average photographer pale in front of a professional.
The digital camera works like the human eye: it captures waves of light through the opening of an aperture and projects them on the camera's sensor. This sensor converts light into electrons that are send to the processing unit and converts the image into pixels (short for picture cells).
It's really important to know how to choose a digital camera. Recently, the market exploded in terms of models and characteristics. One of the most important aspect is the resolution. This is the size of the image measured in horizontal and vertical pixels (short from picture cells). You need to decide what resoultion fits your needs, so for example a 640 X 480 pixels resolution can get you enough details for a passport size picture, however, if you want to print pictures of 8 X 10 inches, you might need a 1.6 megapixels resolution of 1536 X 1024 pixels. However, look for the camera's 'actual' resolution, and not the interpolated one, which uses software to fill the gap that the camera's sensor couldn't fill.
You also need to take into account memory characteristics. Most camera today have memory cards on which you can store information. Make sure your camera supports memory cards of enough capacity before you buy them. You would also want to look for lens characteristics: most cheap digital cameras have removable lenses and may not have the extras and add-ons of the higher priced semi-professional or professional ones. Here you have to take into account the optical zoom characterisitcs and not the digital ones. Also, you need to know how much the battery lasts, as you don't want your battery run out when you have a really important event.
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About the Author
Alex is a professional photographer for http://reshade.com . Reshade.com focuses on online picture processing applications and makes available a free to use online picture resizing web-tool. It additionally provides a picture resizer software program . Give it a try !
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