The standard photo size is typically determined by the type of use and the display of the photo. As Visuals Clipping notes, smaller sizes, like 4×6, are ideal for albums or casual snapshots, whereas sizes like 5×7 or 8×10 can make a more impactful statement. The composition and aspect ratio of the photograph should also be taken into consideration, since an image of a different size might need to be cropped. When matching the size with the use to which the display is to be put, details are more likely to be preserved.