Q1 : What is aspect ratio? The relationship between the height and the length of your photo is called the aspect ratio.
Today's digital cameras are different from older cameras. Almost all digital cameras (with the exception of digital SLRs) produce an image with a 4:3 aspect ratio (closer to a square). The reason for this is that the first digital cameras were meant exclusively for use with computer screens (most monitors use a 4:3 aspect ratio). That is how they've stayed ever since.
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