When you look at Mark Wahlberg you think he's in really good shape. He obviously works out and has good sized muscles. Then you put six-foot five-inch Dwayne "The Rock" Johnson next to him, and Mark (5' 8") looks like a really small guy.

Wahlberg and Johnson are currently filming "Pain and Gain" in Miami. The film centers on two bodybuilders who get caught up in an extortion ring and a kidnapping scheme that goes terribly wrong. The film is set for release in 2013.

Check out more photos of Mark (who despite his "diminutive" size is still pretty hot) on the set...