Pictures and scansThere were many differences between taking photos and scanning:
- ** Clarity **: Scanning is an electronic version of the original picture. The resolution is very high. This is because the scanning device can accurately capture every detail on the paper through moving images such as electron beams and radio waves. The clarity of the photo depends on the phone's resolution and photo skills. Although the modern phone's resolution is getting higher and higher, the photo may be affected by factors such as light and hand shake. The clarity is not as good as the scanned picture.
- ** Scale **: The size and proportion of the scanned document and the original document are exactly the same. For photos, the size or proportion of the image may be different from the original document due to factors such as shooting angle and distance.
- ** Color **: The color of the scanned document is balanced and uniform. It will not flicker, and the original document color can be accurately restored. The color of the photo may be affected by environmental light, mobile phone camera, and other factors, resulting in color distortion.
- ** Information content **: The scanned image usually does not contain information such as the time of shooting and the focal length of the camera. The image file left after the photo is taken will contain this additional information.
In the presentation of painting and calligraphy, the difference between the two was acceptable when the small picture was previewed. However, the photo works might have large color deviation, obvious dark corners, and uneven lighting. Although it was improved after later adjustment, the clarity was not high, the details were poor, and the image level was not high enough. The scanned works had accurate color reproduction, no uneven lighting, good image level, excellent details, high definition, paper texture, brush strokes, etc., which was suitable for printing high-end albums or magnifying them several times.
In terms of equipment selection, the common scanning devices were flatbed scanner, portable scanner, and mobile phone scanning application. A flatbed scanner is suitable for home users; a portable scanner is easy to move around but the scanning quality may be compromised; a mobile phone scanning application is suitable for simple scanning needs. Before the scan, preparations should be made, such as cleaning the photos and scanner, preparing the scanning software, etc. During the scan, the resolution, color mode, file format, and other settings should be adjusted. The scanning process includes placing the photos, starting the scan, previewing the scan, scanning and saving, and other steps. After the scan, post-processing such as image restoration, trimming, and rotation may be needed.
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