Battle Time was left eight and a half lengths in Xtravagant's wake with the filly Serena Miss third and Brighton best of the rest.
Cameron has been close to winning the 2000 Guineas several times previously, including a runner-up finish on Xtravagant's brother He's Remarkable in 2010, and his time came in outstanding style.
"He was just humming along and he was way too good for them," he said. "It was incredible."
Xtravagant is prepared by group one-winning trainer Stephen Autridge, but for his younger training partner Jamie Richards it was a first at the elite level.
"It's a massive buzz and we didn't expect him to do it like that," Richards said. "We thought he had improved since Wellington and the Te Akau model of getting them down here early has worked again " he's an outstanding colt."
It was a fifth 2000 Guineas victory for the Te Akau operation, whose principal David Ellis purchased Xtravagant from Rich Hill's 2014 Premier Sale consignment for $375,000.
They had previously won the classic with King's Chapel (2003), Darci Brahma (2005), Tell A Tale (2008) and Rock 'N' Pop (2011).
-NZ Racing Desk.
