@saponga, what I meant was... your phone takes the picture in a (for example) 2576x1936 resolution and flags it as "rotated". Some picture viewers honour that flag, others don't. If you rotate the picture in e.g. Windows Photo Viewer, the original resolution gets transposed to 1936x2576, no rotation flag. I think this is the post-processing Half-Life meant.

Here is my entry. My kids feeding the ducks in the park, with some gulls trying to snatch the food. Taken yesterday, 8 Feb 2015, with my N900:


...And here's a couple more for a god measure, out of the competition. The one on the left is from the same event, the one on the right is the first snow in our garden about a week ago. I originally meant to submit that one because snow is so unusual around here but I decided to wait until I find a better one.