Hunting

When hunters observe prey at a long distance, they simultaneously measure the distance (e.g., 50-500 meters), adjust their aiming strategies based on the prey’s size and environment (such as terrain slope), and avoid missed shots caused by incorrect distance judgment. When birdwatchers observe bird habitats from a long distance, they measure the distance between the bird flocks and the observation point, assess the optimal position for shooting or observation, and record data on the scope of the habitat at the same time.