via What If's Facebook page. You find a gif from the Tumblr gif booth at the premiere here.
Via Daniel's official Google+ (watch the video from E! Online here) :
Premiere ride along with E! #whatif #premiere #eonline
This video is also shared by danieljradcliffe.tk on Facebook.
Update: 7/8/9th August 2014. Thanks to Gurl.com and uInterview.com for sending over their interview with Daniel at the premiere. Then there is another interview from Movie Maniacs.
picture source: Dave Allocca and Andrew H. Walker
The Google+ link at this page is Dan's post shared via this site's Google+ page