How does Discovery Discovery Channel film the animal world?

I don't know what kind of lens you are talking about. The lens of this kind of ecological documentary usually uses a telephoto lens with a long focal length. The cameraman shoots in a disguised vehicle in the distance, and can quickly follow up or evacuate once the target moves or encounters danger. Some close-ups are hidden in pre-selected positions, and some have to put bait to attract the photographed animals into the camera. This is a very complicated and dangerous process. Exploration also made a documentary about how to shoot these shots, and LZ can search them.