Less than two weeks ago, Robert Downey Jr. joined the social media world of Twitter, just before production started on Avengers: Age of Ultron. Today, the actor sent out the first official photo from the set, alongside executive producer Jeremy Latcham, both of whom are wearing reflective vests. Hopefully this will be just the first of many images the beloved actor releases during the production of director Joss Whedon's Marvel Phase Two sequel, arriving in theaters May 1, 2015.

<strong><em>Avengers: Age of Ultron</em></strong> Robert Downey Jr. Set Photo

Production has already taken place in South Africa, Northern Italy and South Korea, with the bulk of shooting to take place at London's Pinewood Studios.