Simply defined, a digital image is any image taken from a computer, scanner, or digital camera. Digital cameras create these images using a CCD chip, which is composed of many small light sensitive cells arranged to divide the pictures into rows and columns of smaller sub areas, and scanners function almost the same way. Slide scanners contain one row of light sensitive cells, and a motor that moves the row down the slide, creating columns that form the total image grid.
Why Is It Better To Scan Slides As Opposed To Scanning Prints?
Scanning film and film slides, generally speaking, produces higher quality images than simply scanning prints. The main reason for this is because scanning the film or slide is, in a sense, using the original image to make a copy, while an already developed print is more of a second generation copy, which will in turn produce a third generation copy once it is scanned.
Film also contains greater detail and contrast, since most film is capable of at least 3,000 dpi, compared to 300 dpi for color photo paper. A film scanner allows for enough quality image pixels to be scanned, as opposed to […]
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Everyday some new invention occurs in the field of computers. Because of these inventions, there are leaps and bounds of advancement in the computer world. This advancement is based on its advanced technologies and highly featured devices. Computers are aided with different scientific technologies that also enhance its performance.
A memory card is the solid state electronic data storage device in computers. Not only in computers, but it is found in almost all of the electronic computerized devices. These devices are mobile computers, digital cameras, music players, video game consoles and other electronics. Let us continue our discussions on different memory cards and some of the speeds of these cards.
When they are found in some devices they offer power free storage, record ability, and small form factor. The cards that are in solid state use flash memory and those cards that are in the non solid state do not use flash memory. Flash memory cards are replaceable for the hard disks in USB drive and MP3 player etc.
Different cards do different jobs and have different speeds. Some common areas of application are digital cameras, in cell phones and in game consoles. PC cards are a different type. They are […]
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