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While zooming capabilities are a major deciding factor in choosing a zoom digital camera, there are two parameters which camera manufacturers specify. One is the optical zoom and the other is the digital zoom. Optical zoom is the parameter which defines the actual zoom which the user can use in a zoom digital camera. It is the distance by which the lens moves in order to capture objects at farther distances. Manufacturers make shopping for a zoom digital camera an easy process for you by highlighting certain important features like the pixel capability and the zooming range of a camera. They also provide other details like the modes setting available in the camera, the size of the LCD screen, the type of batteries used etc. However, the information on the zoom becomes very important when choosing a zoom digital camera since shooting objects father away from the camera is an essential feature. When you are on a wildlife expedition or a bird watch tour, you cannot shoot very close to the objects. You shall be at a safe distance from wildlife and you need a high resolution and high- zoom digital camera to capture them in their natural habitat. Wildlife photography would probably have the highest zooming requirements since explorers want to watch their catchy animals closely in their habitats. For all this, you need a professional or a semi-professional zoom digital camera with superior optical zooming capabilities. Digital zoom is a feature which is practically of no or little use in a digital camera. In digital zoom, the zoom digital camera captures a portion of the image which when captured in high resolution can be later cropped using an image processing software and stored after manipulating with the image. Even after this, it is not sure that you would get an image of superior quality which you would get when shot in the optical zoom range. Hence, while buying a zoom digital camera always go for higher optical zoom like 10X,15X or 20X if you are serious about photography. If you need only amateurish snaps taken only during outings and parties, go for a compact zoom digital camera with a minimum optical zoom of 4X. The optical zoom number signifies the difference between the maximum and the minimum position of the lens. Hence, the actual zooming distance would vary with the lens. Hence, 10X zoom of two cameras from two different manufacturers offer different zoom distances in actual. Digital SLRs have the option of changing lenses which gives the zoom digital camera lot of room to explore serious photography.
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