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Digital Camera Buying Guide
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Digital Camera Buying Guide
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This Digital Camera Buying Guide explains the basic features of digital cameras to help you make an educated buying decision about which digital camera features you need. Last year over 4 million people purchased digital cameras. That's because digital cameras offer so many advantages over film. Why? Digital cameras are very popular because they're fast. Fast cameras for a fast-paced world. You get instant results - no film to process - no waiting for photo developing. Just snap a picture and connect the digital camera to your computer. Download the images, view it on your monitor and copy it on your printer.
There are many advantages with digital photography. Digital cameras record images on reusable memory cards instead of film, therefore no developing costs. Take as many pictures as you like and only print the ones you want. Digital photos are stored as digital files so, with good software, you can turn your computer into a photgrapher's darkroom. You can crop, enlarge, and retouch your photos to perfection. With digital photography you can view your photos in many ways. E-mail your digital photos or post them on a photo-sharing website. If you wish to make prints, you can use an online photo editor or make them with a photo printer.
Shopping for a digital camera is much like shopping for a computer. You begin by identifying your needs. Do you want to view your photos on the computer screen? Do you plan on making lots of prints? Will you be using the digital camera for your job or business? Will you require a zoom lens? Knowing what kind of photos you'll be taking will help you decide what resolution, storage type, power source, and other features and accessories you'll need.
How Digital Cameras Work
Digital cameras work very much like a regular camera. Digital cameras have a lens and a shutter that lets in the correct amount of light. The light strikes the film in a regular camera. The light strikes a chip, an array of image sensors inside a digital camera. Each image sensor is a charged-couple device (CCD) which converts light into an electrical charge. The charge is stored as analog information then it's digitized by an analog to digital converter (ADC). Every receptor in the array of image sensors creates one pixel. Information about each pixel is stored in memory.
Some digital cameras use CMOS chips as image sensors. The process is the same one used to mass produce DRAM and microprocessors for computers. CMOS sensors are quite a bit cheaper than CCDs.
CMOS sensors consume less power and can have other circuits included on the same chip. These additional on-chip features can include analog-to-digital conversion, camera controls, image compression and picture stabilization. However, cameras with CMOS chips are smaller, lighter, cheaper and more energy efficient, but the image quality it not quite as good as digital cameras with the CCD sensors.
Shop here for Digital Cameras, Camcorders & Digital Photography Accessories.
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