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. Lapere claims that these results rival what's possible on today's higher-end PCs. If we're lucky, the PCs and, fingers crossed, consoles coming down the pike in the next few years will be able to pump out visuals like this.
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]