MICHAEL ZHANG, PETAPIXEL:
"Here’s a portrait of Russian cosmonaut Oleg Kononenko posing with Nikon DSLR gear on the International Space Station on October 6th, 2015. Tens of thousands of dollars in camera equipment is stored on the walls of Zvezda, the Russian service module in the ISS. As you can see, there are lens mounts fixed to the walls of the module for storing the collection of glass.
"So, when it’s not being used, the equipment doubles as wall decor.
"In the 15 years of humans living aboard the International space station, astronauts have shot more than 2.5 million photos."
Read more, and see the pictures, here.