Is there a difference between a scanner and a camera?

1. scanner: It is a device that uses photoelectric technology and digital processing technology to convert graphic or image information into digital signals through scanning.

2. Camera: It is a kind of equipment that uses the principle of optical imaging to form an image and records the image with a negative.

Second, the acquisition methods are different.

1. Scanner: Extract original lines, graphics, characters, photos and flat objects and convert them into devices that can be edited and added to files.

2. Camera: After the light reflected by the photographed scene is focused by the camera lens (photographic mirror) and the shutter for controlling exposure, the photographed scene forms a latent image on the photosensitive material in the camera box, which is developed (i.e. fixed) to form a permanent image.

Third, the advantages are different.

1. scanner: It is used to convert light waves reflected by images into digital signals during scanning. Most CCDs used in planar scanners are color image photoreceptors, and fluorescent lamps are arranged linearly.

2. Camera: an optical system for imaging, which consists of a series of optical lenses and lens barrels. Each lens has two characteristic data: focal length and relative aperture.

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