How to determine the median color scanner - office supplies industry

Was said Scanners Analysis of the color range beyond. Usually the median color scanner, the more truly reflect the color of the original image, scanner, color reflected the more abundant, the effect of sweeping out the more real image, of course, result in increasing the volume of graphic files . For some application environments, color scanner, the median indicator, even more important than resolution. The specific target of the median color of "bits" (ie, the number 2 power) to describe the 24-bit color scanner that can distinguish 16,700,000 kinds of color, 30 true color 6.87 billion colors, and 36 bit true color is 167 billion kinds of colors. Although the majority of Graphics Only supports 24-bit color, but light-sensitive CCD curve with different eyes, in order to ensure accurate color reproduction, we need an amendment, which requires at least the median color scanner to reach 36 to get a better color reproduction effect. So now as far as possible should buy the median of 36 color scanner. Real scanner means 36 used by the CCD light-sensitive devices is 36 bits, while data processing is 36 products. And currently on the market called "36 scanner," a wide range of confused. In addition to true 36-bit, there are: sham 36, quasi-36, CIS36-bit and other types, we must pay attention to the time of purchase. 36

leave is to last 24 or 30 to replace what the old box, change of the name (as in the original model, add a PLUS or TURBO gradually getting better), it re-marked as 36 to buy, this is a kind of thorough fraud and counterfeiting. The so-called quasi 36 means that the scanner is still used in 24-bit or 30-bit CCD. Only way to handle the data into 36-bit, a bit similar to the way of improving resolution by interpolation approach. This approach can only produce limited improvements in image quality. In addition there are currently on the market with CIS (otherwise known as LIDE) technology, scanners, their performance seems very high, almost all 36, but cheap, in fact, CIS technology itself can achieve the highest color accuracy only equivalent to 18-bit color, so manufacturers are used in the scanner 36-bit image data processing methods are modified to make the image quality is barely acceptable level. After all CIS's performance than 24-bit color resolution CCD scanner worse, with real scanner 36 is very different. How can we get a true 36-bit scanner do?

To leave 36 and CIS36-bit scanner is relatively easy to identify, from the packaging, price, etc to judge. For the quasi-36 scanner can take several approaches to testing:

First look at the scanner driver and software support. Real scanner 36 in its scanning interface which should have a clear 36-bit options, millions of colors rather than vague or hundreds of millions of colors. As the vast majority of software currently do not support 36-bit data format, so if in general Image Processing Software (such as Photo Editor) in the scan, the true 36-bit scanner will error. Of course, support 36-bit data format PHOTOSHOP, and there is 8-bit data path and 16-bit data path of the copies, including 16-bit data channel is to scan designed to support 36-bit mode, so true 36-bit mode, the scanner scans after 36 PHOTOSHOP be displayed in a 16-bit data channel. The false appear as 8-bit data path.

Followed Test Department of scanner light and dark on the details of the recognition ability of the Department. 36 true image scanner should be bright shadow detail and the Department of detail while maintaining good recognition ability to leave 36 or 36 products quasi-recognition effect will be much less. Specific methods, the Department for details of identification of bright color photos can be scanned to determine the negative watermark, true 36-bit scanner can clearly reproduce these watermarks, and other types of products are generally delineate only a piece of paper. Reproduce the ability of the shadow detail can be used in the black paper Pencil Write a few words, and then scan 36 scanner can really clear reproduction of the word pencil, the fakes can sweep out a black paper.

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