iPhone, iOS 9.2 (when the problem occurred)
Photos taken from a container field within FMGo on iPhone are not oriented correctly within the field.
Use FileMaker Pro on a computer with photo editing software to export photos, open and save (they have the correct orientation when opening in Photoshop), drag back to FMP to replace upside-down images.
If there is a known workaround – settings/calculation in the container field? – I would try them. I didn't find anything helpful after looking around here for the last 30-45 minutes.