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Photography. A 35-mm camera has a standard lens with local
Chapter 34, Problem 51E(choose chapter or problem)
Photography. A 35-mm camera has a standard lens with local length 50 mm and can focus on objects between 45 cm and infinity. (a) Is the lens for such a camera a concave or a convex lens? (b) The camera is focused by rotating the lens, which moves it on the camera body and changes its distance from the film. In what range of distances between the lens and the film plane must the lens move to focus properly over the 45 cm to infinity range?
Questions & Answers
QUESTION:
Photography. A 35-mm camera has a standard lens with local length 50 mm and can focus on objects between 45 cm and infinity. (a) Is the lens for such a camera a concave or a convex lens? (b) The camera is focused by rotating the lens, which moves it on the camera body and changes its distance from the film. In what range of distances between the lens and the film plane must the lens move to focus properly over the 45 cm to infinity range?
ANSWER:Solution 51E
Step 1
Given that
The focal length of camera lens f = 50mm
It can focus on the objects between 45 cm and infinity