The above image was never distributed to AFP's clients. Issued by the North Korean agency KCNA in 2013, it purports to show military manoeuvres in the east of the country. But analysis of the missile fire and smoke, using specialist software, revealed a series of anomalies indicating it had been manipulated. It is, in all likelihood, a doctored image. This is an extreme case, but fraud in photography is far from limited to North Korea, Syria or extremist propaganda movements. On February 12, an unprecedented number of entrants were disqualified from the World Press Photo awards for tampering with their images - reviving an old debate about the fine line, in photojournalism, between artistry and fraud.