After much hoping and fingers crossing, I finally got the in game Selfie Camera and decided to see what the fuss was all about. The first character I got it on was my dwarf. When you line up the photo, you character takes up the centre and you can't move it so you can't appear at one side or the other like in real life so you need to work round it. Its more a gimmick than a real improvement to the game.
If you get the Mk3, you get more gimmicky things, like filters such as having a black and white photo. There's an achievement to visit various locations round the continents which awards a title 'Field Photographer' but nothing else and the amount of points is quite low, only 5.