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Digital Camcorders come in two different formats: interlaced and progressive scan. The interlaced cameras scan an image by alternating lines: the odd-numbered lines are scanned, and then the even-numbered, for each frame. For this reason interlaced cameras really only capture half the information in a given scene, but due to the persistence of vision, viewers typically do not notice any difference unless the object being filmed is moving quickly. When the object is moving quickly, lines appear to extend from its sides. Interlaced still photos have to be processed in a program like [Adobe Photoshop]? to de-interlace them, making a half-sized image without the jagged edges. Progressive scan cameras scan the entire picture for each frame, producing a finer image than interlaced scan cameras, but typically cost a few hundred dollars more. An interlaced and a progressive MiniDV camera can use the same kind of tape. Apparently there are no interlaced DV cameras, as they are more expensive and for professional use, and their users therefore afford the highest fidelity. |
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Digital Camcorders come in two different formats: interlaced and progressive scan. The interlaced cameras scan an image by alternating lines: the odd-numbered lines are scanned, and then the even-numbered, for each frame. For this reason interlaced cameras really only capture half the information in a given scene, but due to the persistence of vision, viewers typically do not notice any difference unless the object being filmed is moving quickly. When the object is moving quickly, lines appear to extend from its sides. Interlaced still photos have to be processed in a program like Adobe Photoshop to de-interlace them, making a half-sized image without the jagged edges. Progressive scan cameras scan the entire picture for each frame, producing a finer image than interlaced scan cameras, but typically cost a few hundred dollars more. An interlaced and a progressive MiniDV camera can use the same kind of tape. Apparently there are no interlaced DV cameras, as they are more expensive and for professional use, and their users therefore afford the highest fidelity. |
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see also webcam |
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see also webcam, television |
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