How Digital Cameras Work
Digital Image
A computer graphic is an image that has been converted from an
input device such as a scanner or digital camera to a computer
file so that it can be interpreted by a graphics program. A
graphics program is software designed to convert the file to an
image which can be displayed on a monitor allowing manipulation,
editing or print-out of the image.
Raster Image
A digital camera uses the bit map (aka raster) method to store files. An image is stored as rows of pixels starting from the top left pixel to the bottom right pixel. Information for each pixel is stored in this string of code. Depending on resolution and size, file sizes can become quite large.
Image Properties describe different aspects of an image such as size, color depth, resolution (DPI) and other information related to the format of the file.
