| 摘要 |
[Problem] To provide a zoom lens having a high zoom ratio, a bright wide angle, and various aberrations satisfactorily corrected. [Solution] This zoom lens comprises, in order from the object: a first lens group (G1) having a positive refractive power that is fixed during a change in magnification; a second lens group (G2) having a negative refractive power that changes during a change in magnification; a third lens group (G3) having a positive refractive power that is fixed during a change in magnification; a fourth lens group (G4) having a positive refractive power that changes during a change in magnification; and a fifth lens group (G5) having a negative refractive power that changes during a change in magnification. The first lens group (G1) comprises, in order from the object, a front group having a negative refractive power, a reflective member (PP1) that bends a light path, and a rear group having a positive refractive power. The fourth lens group (G4) includes a cemented lens having at least a positive lens (L41) and a negative lens (L42), and satisfies the formula 0.8<IH/fw. |
