When we buy scanners, we often see this phenomenon. Many technical parameters, such as scanners with the same scanning format, optical resolution, and color bits, have very different prices, and some even tens of times. So, what are the differences between home scanners and professional scanners?
Professional scanners will automatically detect the light intensity emitted by the lamp before scanning, especially when the scanner has just started because the lamp has not entered a stable state, the scanner has a certain warm-up time, only when the light intensity reaches the standard, the light source detection sensor in the machine will issue a pass command. At this time, the scanner can scan in the best working state. Ordinary home and office scanners basically do not have a self-check program. The light emitted by some scanner lamps does not even look dazzling to the naked eye. Such light intensity is naturally insufficient to express the details of the dark parts of the original.
Mirrors play a vital role in scanners. We know that when light strikes a surface, the diffuse reflection will occur. Since it is impossible to create an absolute plane, there will be some loss when the light is irradiated on the mirror surface. The less light is lost. In order to minimize such interference, professional scanners have been specially sprayed on the front and back of the lens, and even used the same paint as the darkroom material of the camera. In fact, in recent years, Zhongjing Technology has applied this technology to ordinary household and commercial scanners.
The perfect image quality depends to a great extent on a high-quality lens. A high-quality lens must solve a series of problems related to light control: the quality of the image, the frame area covered, the consistency of the wide range of shooting distance, the large aperture, etc. The glass used to manufacture the lens must have good physical properties. From the current lens manufacturing technology, in order to improve the light transmission rate, the coating technology is used, and you can use the direct view method to inspect whether the lens coating technology is good or bad. The weaker the lens, the better. At the same time, in order to improve the imaging effect of the lens, aspheric mirror technology, and low-dispersion technology have now been adopted, and the current lens definitely needs to use a multi-piece combination.
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