Proof to friends & family (who know Paul is afraid of heights) that he was really there - but not too close to the railing. Proof to friends & family (who know Paul is afraid of heights) that he was really there – but not too close to the railing. Technical Details Camera: iPhone 4 Taken: June 21, 2011 Focal length: 3mm Aperture: f/2 Exposure: 1/1,436 second ISO: 80