> Click! Your camera just turned photons into bits.
Click! Your camera just made a skeuomorphic sound.
Click! Your camera just made a skeuomorphic sound.
IIRC due to pervs chucking cameras onto selfie-sticks and taking upskirt photos and the like, digital cameras are required to make a clear and un-muteable (camera) sound in some countries.
As another example, consider the iOS notes app[1] before the iOS6 design transition. The app looked like a legal pad---complete with a leather binding across the top and remnants of pages torn off. These were essential functional characteristics of the original object, but were retained in the copy only to provide visual cues to the user that remind her that the app she is using is just like a notepad.
[1] http://cdn.redmondpie.com/wp-content/uploads/2012/02/Notes-2...