 In July 2010 , Marvel Studios head Kevin Feige said that both this film and Thor would be released in 3 @-@ D. Johnston did a one @-@ day test shooting with a 3 @-@ D rig , rather than shooting in 2 @-@ D and converting , and found it " a nightmare " due to bulky gear , calibration issues and restricted filmmaking options . Nevertheless , he said he believes 3 @-@ D is " a new challenge and it 's exciting " . Feige insisted that the conversion would not compromise the film 's image quality , as the decision to release the film in 3 @-@ D was made early in development , and that " an unprecedented amount of time " would be devoted to the conversion process , to render all the film 's visual effects in true 3 @-@ D. 
