 Although the gunfight at the O. K. Corral plays out more or less as  it did in real life, the filmmakers made several small changes. In  the actual incident it was Ike Clanton who ran through the corral to  escape (in the film it is Barnes who runs out the back). The film  instead shows Ike Clanton running into the photographers studio  while firing a few shots back at the Earps and Doc. In reality, it  was Billy Claiborne who performed this action before escaping  unscathed.