Photos with aspect ratio 2:3 are zoomed in and cropped
The photos from my camera have an aspect ratio of 2:3, so in full view they would be displayed on iPad with borders on top and bottom. This is fine with me.
But:
Since iOS9 they are all displayed full screen, and the parts that are not visible are cropped.
To see the full picture I need to zoom in first, then zoom out. For each and every picture.
This behavior is new since iOS9, on iPad3 and iPad Air2.
How can I make the iPad show all pictures without cropping and zooming in?
iPad Air, iOS 9.0.2, 128G