Young & Thompson
Imaging lens and imaging apparatus
An imaging lens consists of, in order from the object, a negative first lens, a positive second lens, a positive third lens, a negative fourth lens, a positive fifth lens, a positive sixth lens, and a negative seventh lens. When νd7 is the Abbe's number of the material for the seventh lens, f is the focal length of the entire system, and f5 is the focal length of the fifth lens, the following conditional formulae are satisfied:νd7<55  (2)1.25<f5/f  (10).
FUJIFILM Corporation
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Asami