Professional rock climber Alex Honnold attempts to conquer the first free solo climb of famed El Capitan's 900-metre vertical rock face at Yosemite National Park. The film recieved the Academy Award for Best Documentary Feature Film (2019).
In the following short video about the documentary film, the directors talk about a deeper issue: "we had this ethical question, is [Honnold] more likely to fall when we were there because we can be a distraction than if he is by himself"... "[we are] aware that a camera changes the dynamic".

© Chin & Vasarhelyi
The scenes that I have see from the film are dramatic, but it was the ethical questions that drew me to the following short.
Casey
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