Louise Murray is a freelance photojournalist at the forefront of issues around ecology, nature, environmentalism and science. She has traveled from pole to pole, to shoot critical stories on the natural world.
Here’s a useful tip for Nikon users: You see this screw? This 2mm screw that can be found tucked on the side of the bayonet on all Nikkor lenses? Well, if it falls off it can cause a lot of expensive damage!