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用传统相机拍摄的图像要进行数字化处理，须经过拍照、冲洗、扫描三个步骤。而用数码相机摄影则无需胶卷，无需暗室，无需扫描仪，拍摄的图像可直接输入到计算机中，在电脑或电视中显示，用户可在计算机中对图像进行编辑、处理，通过打印机输出或通过电子邮件传给别人，大大提高了工作效率。
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