Question

What is equivalent lens

Answer 1

In photography, the 35 mm equivalent focal length is a measure that indicates the angle of view of a particular combination of a camera lens and film or sensor size. ... On any 35 mm film camera, a 28 mm lens is a wide-angle lens, and a 200 mm lens is a long-focus lens.

Answer 2

equivalent lens➡A simple lens of the same equivalent focal length as an optical system which, when placed at the first principal plane of the system, produces an image identical to that of the system except for a shift along the axis of magnitude equal to the distance between the principal planes of the system,

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