My kids joined me on a trip to Berlin, excellent weather and a great city. Close to the Berliner Dom I pointed my camera at the ground and took a picture. My oldest daugther asked me why I took a photo of the asphalt. I showed here the interesting lines of the composition. Off course I couldn't show her the composition on my F4s so I had to take a photo with my iPhone to show it to her. She wasn't convinced yet. After she saw the printed picture in large format at an exhibition she told me that she understood what I meant. She loved it.