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The preceding paragraph of the last article has shown the actual pixel and the photosensitive element, and CCD. And this time I will show you something about the optical zoom and the digital zoom.

Lots of us could say, what is the different between the optical zoom and the digital cameras. Do not hesitate, I will show you slowly and exhaustively details. The optical zoom is the authentic pixel; it could restore the long distinct landscape to the original state by archetypal without the quality Digital Camcorders loss. While the digital zoom is sacrificed the photos’ quality, if you used more that it could dearly bought more. So, in daily life the digital zoom hardly used. Attention, please, do not think the times digital zoom could be better; it is almost no use, and the digital zoom is not the real pixel.

And about the optical zoom Digital Camcorders , how far is it from us. Many people like putting the large pixel zoom together with the professional digital camera; even put the large zoom equal to the choices digital camera, this opinion is so unilateral. Though the large pixel zoom is more attracted, you should know one view, the focal length is not the final pursuit of the purpose. The most important is the camera lens covered the focal length.

Generally speaking, if you shoot one person should use the medium focal length (85 - 135mm) is more suitable, while when you shoot the landscapes and the buildings that you could use the wild-angle lens is more effective (18 - 40mm). The large various focal lengths cheap digital camera is just like the fish and the bear ’s paw that we can not have them at the same time, the reason is very simple, the large various focal lengths has shorter of the depth of focus. Though it could highlight the main body, while the focus is so slow and the precision High Performance Camcorders is so poor, it could make the main part indistinct.