In the opening scene, a member of the cast is photographing documents with a Minox 9mm subminiature spy camera. He is correctly looking through the camera viewfinder but foolishly covering the lens with his fingers, making it impossible for document images to reach the film. Also the photographer is positioned at an angle to the documents. Instead he should be positioned directly over the documents, the document lighting should be at an angle.
When Davinia gets up after the scuffle with John, the shadow of the boom mic is visible on the wall.