Aspect Ratio for images

Displaying landscape oriented photos in either 4:3 or 3:2 will always be shown zoomed as a 16:9 picture.
Is there a hotkey or a setting to display the images in their original aspect ratio?

I’m using Ver 1.8.0 on an Odroid C2.

Hi,
I have exactly the same problem.
I am using openpht 1.7 on Ubuntu.
Thanks