There are always ethical issues under discussion as to whether this film should be made. It is the principle that Jimmy Chin grasped when filming to maintain a neutral attitude towards what Alex was doing, and to have the entire team work closely together. During the filming process, Jimmy Chin and other crew members Observing Alex from a distance, he could not shout to start or stop, lest he put pressure on the climber. To ensure safety, the entire crew is professional rock climbers from all over the world, and all staff risk their lives during the shooting
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During the shooting process, in addition to the use of drones and helicopters, the camera crew also had 8 photographers waiting around the rock wall in advance to take pictures of Alex climbing. When shooting, the photographers carried dozens of pounds. Heavy photographic equipment and climbing equipment are hung on the rope. As the shooting needs to get up and down the rope quickly, you need to have excellent physical fitness and skilled rope operation ability. More importantly, they can't bother to influence Alex. The photographer at high altitude ascends with Alex. There are hundreds of meters of rope to take care of. The photographer must keep the rope neatly on his side. Any mistakes may cause fatal consequences, including accidentally falling. The lens cap, a stone accidentally kicked off
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