Final answer:
The image distance and focal length f are crucial in optics and photography for precise image formation.
Explanation:
The distance between the camera's image sensor and the attached lens' optical center is called the image distance. It is crucial in understanding how light rays interact with the lens to form an image.
In optics, the distance from the center of a lens to its focal point is known as the focal length f. This distance plays a significant role in determining the characteristics of the image formed.
Understanding these distances is essential in the study of optics and photography, allowing for precise image formation and adjustments in camera settings.
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