Many thanks to @keanulatino for tweeting the link!
Keanu spent a significant part of 2011 abroad filming 47 Ronin. The film shoot ended some time in July 2011 since the wrap party was on July 31, 2011.
David Nassim is a London born photographer that is based in Berlin. He reorts in Demotix that he ran into Keanu in Berlin on July 24th, 2011. He posted three photos that he took of Keanu and his group. Chris Kenneally and Justin Szlasa were definitely with Keanu on that day .I believe the third gentleman is Chris Cassidy, the Director of Photography. the side trip was most likely for an interview they were conducting for Side by Side. The fourth photo is of David Nassim and he surprised Keanu by asking him to take his photo.
