What do people use image manipulation for?
Everything! Just about any billboard, magazine ad, product label
or digital photograph you have ever seen has been manipulated.
Sometimes the manipulations are as subtle as increasing the
saturation of the colors, other times the manipulations are as
drastic as piecing together parts of multiple images to make one
final image.
Image manipulation is generally used by artist to improve the
appearance of the image. Of course it is also used for creating an
image that is not "real" Either way the applications of image
manipulation are endless and very commonly employed.