| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a zoom lens and an imaging apparatus in which the variable power ratio is at least 3 or higher and furthermore various aberrations are excellently corrected. <P>SOLUTION: A zoom lens comprises a positive first lens group GR1, a negative second lens group GR2, a positive third lens group GR3, a positive fourth lens group GR4 and a negative fifth lens group GR5. The zoom lens 10 satisfies conditional expressions (1) 3.0<f1/fW<4.0 and (2) 0.6<f1/fT<0.8. However, f1 is a focal distance of the first lens group GR1, fW is the focal distance of an entire system at the wide angle end and Ft is the focal distance of the entire system at the telephoto end. <P>COPYRIGHT: (C)2013,JPO&INPIT |
