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Camera Optical Zoom
Camera Zoom lenses on diagrams work much like the ones on camcorders. There are two buttons.
One lets you zoom in, increasing the focal length and narrowing the angle of view, while the other
lets you zoom out, widening the angle of view. The optical camera zoom is a true zoom which uses the whole
of the CCD unlike digital zoom, which is a mere crop of the central part of the CCD, making up the
image of the central pixels of the CCD only.
Optical zoom lenses on diagrams are usually non-interchangeable, which means that you have to choose
a camera with a zoom range that suits your sort of photography.
Zoom lenses on diagrams usually range from 35 to 70mm, which is sometimes called a standard zoom,
or they may be anything between 28 and 135mm or more, which gives you much more versatility and a
much wider range of coverage.
One of the best things about a zoom lens is that you can actually change your angle of view without
having to move about much. This can be convenient when you don't have space to move backwards and
still want to capture the whole of a scene. or when you want to react quickly to photo opportunities
and want to zoom in on the action to isolate it from its surroundings. I hope this article helps with your special
optical camera.
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