As with traditional photography, digital cameras work by opening the Shutter momentarily to allow light into the camera. However rather then capturing the image on the silver halide particles found on film,digital cameras usea CCD(charged coupled device) to convert the image electronicaly into pixels(short for picture cells). When combined these pixels make up the complete image, with the number of pixels defining the image quality or resolution. This is often quoted by giving the number of pixels across on image, by number of pixels down it. The resolution of a camera is an important factor when choosing between the Various models available. E-mail and Internet use requires a relatively low resolution camera, while for good quality Prints at basic 6" X 4" size than a megapixel camera is required. Higher resolutions two,three and four megapixel cameras are ideal for larger print sizes. Once on a PC via Cable Manipulation software allows the user to correct the im perfections such are redeye or simply change their image anything from sharpning colours to removing objects people to get it looking just how they want it. The image can then be quickly and easily added to a document, e-mailed, published on a web page or just printed at home from an Inkjet printer. But despite the un deniable benefits of digital photography, some issues need to be considered. Cost is the first consideration. Digital cameras are more expencive than film based ones,to get the most out of your digital camera,you need a computer. The Storage of images is a hidden cost of digital photography. Most cameras use RAM cards to store images and you need at least two to make sure that you don't run out of space.
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