A display apparatus performs predetermined image processing on at least one image data item among the plurality of image data items, does not perform the predetermined image processing on at least another one image data item among the plurality of image data items, and to cause a display unit to display the plurality of image data items, if (A) it is determined, on the basis of meta-information associated with the plurality of image data items, that the plurality of image data items are image data items that have been output from a single image output apparatus, or if (B) it is determined that a display mode is set in which a plurality of image data items are to be displayed, the plurality of image data items including a first image data item and a second image data item generated by duplicating the first image data item.