A scanner is an important electronic device which can help us store or preserve information. No matter if it is a photo, newspaper, or any other kind of document, with the help of a scanner it can be digitized and stored in the computer. There are basically two types of scanners: the flatbed scanner and sheet-fed scanner. Both are quite useful, although in different situations.

Currently there are numerous different products of flatbed scanners in the market, and accordingly there are numerous flatbed scanner reviews both online and offline. You can read all those reviews in newspapers, magazines, or online websites. However, what are the criteria that those reviewers base their judgments of a particular product upon?

Resolution

Resolution is talked about nearly in all flatbed scanner reviews. It is very important because it determines the quality of the image. Technically, it measures the exact number of pixels in a particular area of image, and among all values the optical resolution value is the most important. Usually the higher the optical resolution value is, the better the clarity of the image would be. However, it is also true that the higher the resolution, the higher the price of the scanner will be especially in the case of a portable photo scanner. Rgw The flatbed portable photo scanner is very popular because of its being lightweight and great quality over the sheet-fed scanner.

Bit Depth

Bit depth is also an important factor to consider when shopping for a flatbed scanner. By definition, bit depth refers to the actual number of colors in a specific area of image. Maybe you have heard about 8-bit scanner, 24-bit scanner, etc. This exactly refers to the bit depth of the scanner. The general rule is that the higher the bit depth, the more colors the image has. An 8-bit scanner has only 256 colors, while a 24-bit scanner has 17 million colors. It may sound incredible, but a 48-bit scanner can have as many as 281 trillion colors. However, you should note that the highest bit depth may not be the most suitable for you. Rather, you should base your judgment on what kind of document you usually need to scan.

Software

Today’s scanners are generally connected with a computer, sometimes by a USB line. Therefore, the kind of software the product offers determine the kind of functions the scanner can perform. Therefore, when you read flatbed scanner reviews, you can spend some time reading the section about the software the product uses.