"I have no nostalgia whatsoever for film," he says. "For me, the two great advantages [of digital] are that you can shoot more than 36 frames in any one go, and you can change your ISO as you go along. To do that previously, I had to rewind the film I was shooting, take it out and replace it with another film, or shoot with more than one camera.
"Now, you can make the adjustments in a few seconds. With the 5D Mark II and 5D Mark III, you can push the ISO a really useful distance without feeling you're sacrificing the quality. I like my cameras very simple really. If the flash works and the camera's reliable and the lenses are good, then I'm pretty happy."
Looking back on his 1992 images of the famine in Somalia, although Chris is now less optimistic about how much photojournalism can really change things, he feels he at least contributed something by being there and recording what was happening.
"The Independent magazine ran a cover story on it, so the famine and its causes were well reported and my pictures were used. I don't know what good it did ultimately, but at least I felt the story got onto the printed page and was seen by a large number of people. It didn't just stay in a filing cabinet."