1. A display control apparatus comprising: a display control unit that performs control so that multiple images arranged in a matrix made up of multiple columns and multiple rows are displayed in a display unit; a changing unit that changes the matrix for arranging the multiple images displayed by the display control unit from a first matrix to a second matrix in which the number of columns, rows, or both columns and rows is different from the first matrix; and a control unit that, when a change is performed by the changing unit, takes a location in the second matrix corresponding to the column and row in which a selected image in the first matrix is located as a reference location, and controls the display control unit to arrange the multiple images in the second matrix so that the selected image is located in the reference location.