| 摘要 |
Provided is a zoom lens system including a compact focusing lens unit and having a suppressed change in image magnification at the time of movement of the focusing lens unit. The zoom lens system of the present invention, in order from an object side to an image side, includes, a first lens unit G1 having positive optical power, a second lens unit G2 having negative optical power, a third lens unit G3 having negative optical power, and a fourth lens unit G4. Further, condition: 1.88<nd2 is satisfied (where, nd2 is an average refractive index of a lens element (a portion excluding a resin layer in the case of a hybrid lens) included in the second lens unit G2).
|
