There
many different ways to capture your images, as well as different ways to store
them. To capture the images you can use scanners and digital cameras. Scanners
use a light source, which is a cold cathode lamp that illuminates a scanned
imaged. The light is then reflected off of the object and into Charged Coupled
Device (CCD). The CCD then collects information and through a series of
electronic devices converts the analog signal into a series of digital signals,
which then can be read and processed by the internal electronics of the scanner
and then a computer.
The
way a digital camera captures images is similar to the scanner, it lets in
light through the lens which then reflects the outside into a CCD. The CCD then
collects the information needed and transfers it to the cameras computer same
as a scanner.
Even
though I’ve mentioned resolution before, this resolution is different, this is
printing resolution. The printing resolution is measured in Pixels per Inch
(PPI) or Dots per Inch (DPI), which determines how pixels are in an inch of the
file size. When using DPI you’d be using a DPI of 72 for use on a monitor, but
when using it for print you’d be using a DPI of 300. This is because when
printing it’ll be clearer rather than distorted and show pixels.

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