Actually, you can do this in iPhoto. First, select the multiple photos that you want to view (by holding down the "Command" key as you select each one). Then double-click on one of the photos. All of the photos that you selected will then be shown together in one viewing window.
Actually, you can do this in iPhoto. First, select the multiple photos that you want to view (by holding down the "Command" key as you select each one). Then double-click on one of the photos. All of the photos that you selected will then be shown together in one viewing window.