If you want to research and study the area of Depth Of Field then the charts and calculators can give you a good view of how things work. And, if you really want to get "technical" with your photography well sure, you can do all the calculations you want, and nobody can tell you otherwise
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For me, for out-in-the-field photography, I find it best to have the basic understanding of things and then make decisions based on the actual scene and what I want to capture, and knowing from experience "what works". There are times when the idea of the hyperfocal distance plays a part, but just as often there are other considerations. For example, if I want a mountain peak to be of optimal sharpness, then I will get that even if it's at "infinity" and much more distant than the hyperfocal distance. The foreground will soften, but if I had shot the hyperfocal distance then despite the "theoretical" Depth Of Field I know from experience that the mountain peak would not be as crisp as I'd like.
Now, if I'm shooting a scene where I'd like the foreground as well as the background to be reasonably in focus, then it makes sense to not focus close and not to focus on infinity, but to pick a place in "the middle", and for that the hyperfocal distance can certainly work. But in the field, well, will you really be pacing out say 100 yards/meters to find that spot? I'm thinking not
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