| 摘要 |
A zoom lens includes a positive first lens group, a positive second lens group, and a negative third lens group, in this order from the subject side. The first lens group consists of a negative first lens element, a positive second lens element and a positive third lens element in this order from the object side and satisfies the following relationships: 4.3<m3T<6 1.7<fT/f1G<3 31< nu 1<55 0< nu 2- nu 1<30 where "m3T" represents the lateral magnification of the third lens group at the longest focal length position, "fT" represents the focal length of the entire lens system at the longest focal length position, "f1G" represents the focal length of the first lens group, " nu 1" represents the Abbe number of the negative first lens element of the first lens group, and " nu 2" represents the Abbe number of the positive second lens element of the first lens group.
|
