1. The ghost doesn't appear able to affect the mortal plane (and physical objects) "How could I, a ghost, have saved her anyway?"
2. The ghost has no idea how to use modern contraptions "They gaze out to sea and then occupy themselves with their hand mirrors, which they peck with greedy fingers and coax to play tunes. In years past, there were vile machines known as boomboxes, but hence they have been replaced with these hand mirrors. Some speak now with spells and command their mirrors to reveal the current weather forecast or to begin cooking their evening meals back home. Remarkable."

So how could he take the pictures?