In Harry Potter and the Philosopher's Stone, Harry buys a Chocolate Frog from the Trolley Witch. On the back, there is a trading card. It's of Dumbledore, but his picture disappears quickly. When Harry questions Ron, he is told Dumbledore has other places to be:
Harry turned the card back over and saw, to his astonishment, that Dumbledore's face had disappeared.
"Well, you can't expect him to hang around all day," said Ron. "He'll be back."
This means Dumbledore has to travel between pictures. Logical- only one picture version of him. But later, whenever a large piece of news came out, we saw witches and wizards everywhere reading news on it, in stacks like these:
Presumably, all of these have the same pictures of people, the same ads, the same of everything. But, if there's only one picture of each person/creature, how can all of these share photos?