These aren't photographs. They're screenshots created via Brigade, a realtime CPU/GPU path tracer created by Jacco Bikker. Posted on the blog of Sam Lapere — who works for cloud computing company OTOY — the details and depth-of-field effects look amazing
You can see a flythrough of the scene created in this demo on YouTube, though the graphical quality suffers from that website's compression.
[Thanks, tipster Andy!]
Real-time GPU path tracing: Streets of Asia screens + video [Ray Tracey's Blog]