It was taken with a pretty standard pocket camera with a pretty decent built-in lens, so you're right in thinking we weren't all that high up. Not long before landing, to be fair. Might even have been seatbelts-on at that stage, but it was 2011 so can't exactly remember...
Hint: I think you might be missing the significance or meaning of one of my previously-given answers. You are so good at this stuff I can't make things easy