What's the difference between scanning and taking pictures?

Scanning pictures requires a scanner and taking pictures requires a camera.

2. The principle is different.

The principle of scanning is to move through electron beams, radio waves and other images; The principle of photography is to expose the light reflected by an object through a photosensitive medium to form a phase.

3. The scope of application is different.

Scanning is widely used in signs, printed circuit boards, printing industry and so on. And the scanning function is used more in the office; Photography is very common in daily life, and it is used for all kinds of photo photography, such as daily selfie and artistic photography.

4. The picture definition is different.

Scanning is to scan the photographed photos or text documents into the computer with a scanning instrument. The effect of scanned photos will be affected by paper quality, reflection and other factors, resulting in unclear scanned photos. Take photos directly with the camera, and the pixels are clearer.

5. The picture information is different.

There will be information such as shooting time and camera focal length in the picture file left by photography, but the scanned picture does not have this information.

Baidu encyclopedia-photography

Baidu Encyclopedia-Scan