The highly anticipated "The Hobbit: An Unexpected Journey" has reportedly caused viewers to have headaches and even become sick. 

Fans who loved the original "Lord of the Rings" trilogy have eagerly waited for the release of Peter Jackson's latest film. The world premiere of the hit trilogy's prequel was held Wednesday in Wellington, New Zealand. 

The film has been shot in high-speed 3D with a frame rate of 48 frames per second compared to 24 frames per second which is the norm. 

However, the high frame rate seems to be too much for some viewers to take in, with the New Zealand Herald reporting earlier this week that fans who saw an early screening of the film reported dizziness, nausea and headaches.  

Jackson, who was one of the main people who opted to go with 48 frames rather than 24, described how doubling the frame rate would be beneficial for the viewer. According to an article on the Directors Guild of America, he said "48 frames absolutely helps 3D because suddenly you're removing a substantial amount of the motion blur that you get at 24 . Your eyes get a much smoother experience."

He added, "Even though I've made a lot of fantasy films, I've always tried to make them as realistic as possible."

This is not the first film that has reportedly caused viewers nausea and headaches. Other blockbuster films, such as "Avatar" and "Twilight Saga: The Breaking Dawn", have reportedly caused motion sickness amongst early viewers. 

But this did not hinder the success of the films, as both "Avatar" and "The Twilight Saga: Breaking Dawn" have become one of the biggest blockbusters. "Avatar" had raked in a whopping $2.78 billion and "The Twilight Saga: Breaking Dawn" has brought in over $700 million.

The latest "Hobbit: An Unexpected Journey" is expected to have as much success, with some estimating that the film will gross over $1 billion.