A 35 mm camera equipped with a 70 m focal length lens is used to photograph a tr

Question

A 35 mm camera equipped with a 70 m focal length lens is used to photograph a tree 24 m tall. The aperture of the lens is set to f/8. A 32 mm high image of the tree is focused on the film. What distance does the tree need to be from the camera lens to achieve this? This distance is closest to (You will probably need your calculator for this question) HINT: First use the magnifcation to to calculate the ratio of the object distance to the image distance, then use this relationship in equation 24.6. Make sure you use the correct signs for object distance, image distance, and focal length. 55 m 63 m e 60 m 53 m 58 m

Explanation / Answer

ARC TAN (32 / 70) = arctan(.457) = 24.57 degrees (Image)

24 meters / 0.457 = 54.7 meters (Object distance)

Answer is 55m

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