Many cameras have a zoom lens. This is a lens whose focal
Chapter 19, Problem 4CQ(choose chapter or problem)
Problem 4CQ
Many cameras have a zoom lens. This is a lens whose focal length and distance from the film can be varied. If the camera’s exposure is correct when the lens has a focal length of 8.0 mm, will it be overexposed, underexposed, or still correct when the focal length is increased to 16.0mjn (assume the lens diameter remains constant)? Explain.
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