If you plan to save it as a file, please choose the highest acceptable resolution. The higher the resolution, the larger the space occupied by the scanned file and the slower the scanning speed.
Extended data:
For scanned images, appropriate image information is the most important. For example, sending a 600 dpi image to a 300 dpi printer is just a waste of time and information. The printer can only use 300 of the 600 pixels, and the rest are not used.
Generally speaking, users need to determine how to use scanned images first. If the scanning results are used to obtain high-quality books, magazines, manuals or other texts with image quality, please try to adjust the resolution to the highest quality. If the scanned image is only used for screen display, it only needs to be scanned at the lowest resolution, because most screens can only display 72dpi images.