Whether going toe-to-toe with poachers in the Sumatran rainforest or documenting illegal shark finning in the Gambia, the ardent conservationist isn't afraid to address uncomfortable topics. "I'm passionate about changing people's minds," he says.
The key kit that the pros use to take their photographs
Canon's flagship full-frame mirrorless camera offers next-level image quality and breathtaking performance for professional photographers and filmmakers. "I love everything about the Canon EOS R5. It's small, fast and durable, and the animal autofocus system is just fantastic for my photography. The new RF lenses are amazing, too," says Robert.
Ideal for enthusiast photographers and videographers, this full-frame mirrorless camera boasts groundbreaking speed, stability and technology. As with the EOS R5, Robert praises its durability and lightweight nature – essential for when he's on the move. "They're the perfect combination," he says.
Tough, reliable and intuitive, the Canon EOS-1D X Mark III offers a 20.1MP full-frame sensor and the ability to shoot 4K/60p video. "I love the way the camera feels in my hands," says Robert.
Capture more, even in low light, with this fast f/2.8 L-series ultra-wide-angle 15-35mm zoom with 5-stops of image stabilisation – ideal for when innovative angles can make all the difference. "It's the perfect wide-angle range," says Robert.
Offering superb optical engineering, a speedy f/2.8 maximum aperture and 5-stop image stabilisation, this lens can give your full-frame mirrorless photography a new edge. "This is the lens I'll use if I'm documenting people in action, perhaps at a market," says Robert.
This telephoto lens offers exceptional image quality in a compact body. "It is probably my favourite wildlife lens," reveals Robert. "It's fast and sharp, meaning I can use it when photographing birds in flight or whales and dolphins from a boat."
This fast, ultra-wide-angle lens offers excellent optical performance throughout the zoom range. Robert will typically use it with the Canon EOS-1D X Mark III when shooting underwater.
The ideal companion for any full-frame EOS camera, this L-series lens has a standout reputation among professional photographers. "I love working with the EF 24-70mm. It's perfect for my documentary work," says Robert.
This robust L-series telephoto zoom lens is a modern classic, designed to perform in even the most challenging conditions. Its 3.5-stop Image Stabilizer and fast f/2.8 aperture mean it can also handle low light with ease.
Durable and surprisingly lightweight, this telephoto super-zoom lens has a built-in extender capable of increasing the focal length to a maximum of 560mm. "I use it for capturing images of skittish animals or in situations where you can't get too close. When photographing bears, for example!" says Robert.
An L-series fisheye zoom lens offering a choice of full-frame or circular image and a wide angle of view. "Wider is always better, especially when you have big animals such as hammerheads or tiger sharks just centimetres away from your lens," says Robert.
A professional L-series sports and wildlife zoom with Image Stabilizer and ASC coating for superb sharpness. Robert says: "When you cannot move but you need to be flexible in terms of distance, such as when photographing whales or dolphins from a drifting boat, this lens is key for successful framing of your image."
Engineered for fast frame rate shooting in a range of light conditions, the Canon Speedlite 600EX II-RT can be used off-camera or in the hotshoe. Robert always tries to keep one in his kitbag.
This handy device is capable of firing compatible Speedlite flashguns over distances of up to 30m. The radio-frequency control offers reliable operation even when direct line of sight isn't possible.
The multi-award-winning photojournalist reveals what drives his wildlife stories, the kit that helps him and why it's important to tell the full story.
Ulla Lohmann and Robert Marc Lehmann on how the Canon EOS R5's 45MP sensor and eye-tracking AF helped them take spectacular outdoor shots.
Wildlife photographer Marina Cano shares her top five tips for choosing a pro telephoto lens.
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