Johnston admitted that he hadn't enjoyed working on his last project The Wolfman, but was surprised by how much fun he had while filming the Marvel Studios comic book adaptation.
"I had a dream cast headed by Chris Evans," Johnston told Comic Book Movie. "I had the best designers, artists, sculptors, craftspeople... a creative team that could design, build, and photograph anything and have it look amazing and beautiful."
"At times I felt as if the gods were saying, 'Ahem, sorry about that Wolfman thing... let us make it up to you," Johnston added.
The Jumanji director went on to describe working on Captain America as "the most universally positive experience I've had in this mad business".
Captain America: The First Avenger is scheduled to be released in cinemas July 29.