Flashlike Photographer

The theme always tries to resize image to fit the whole screen. Because of that top part of vertical photos is hidden. But there still is a workaround for that: add some extra space on the sides of your photo (in photoshop or any other graphic editor) and then save it. In other words create new canvas, 1200×900 and place your portrait orientated photo in the middle, then save it.

OR another option to place to portrait photos on the same canvas.