I found a website titled “Is it Real or Fake 3D?” which differentiate the movies which is genuinely shot in real 3D and those fake one. The fake one claimed that their films are a 3D movies but the truth is it is a fake 3D movies because the producers convert the 2D films into the 3D format during post-production. A lot of these fake 3D movies make the moviegoers hate the 3D movies industry because the quality of the fake one is really crapped and make the viewers dizzy. Some examples of the movies which undergo the conversion from 2D to 3D are “Alice in Wonderland“, “Clash of the Titans” and “The Last Airbender“. The 3D quality of that films will be very different if the movies are shot and rendered natively in 3D such as “Avatar“, “Cloudy with a Chance of Meatballs” and “How to Train Your Dragon“. This website is really a good guide before you decide to watch the movie in 2D format or 3D format at the cinema. You can visit the website manage by Phil Dhingra at http://realorfake3d.com/.