Imaging lens and imaging apparatus

An imaging lens formed of a lens system, consisting of, in order from an object side:

• a first lens group having positive refractive power;
• a second lens group having negative refractive power;
• a third lens group having positive refractive power, the third lens group consisting of a cemented lens in which a positive lens and a negative lens are cemented;
• a fourth lens group having positive refractive power;
• and
• a fifth lens group having negative refractive power,
• wherein, in a case of changing focus from an object at infinity to an object at the closest distance, the distance between adjacent lens groups changes,
• in a case of changing focus from the object at infinity to the object at the closest distance, the first lens group is immovable,
• in a case of changing focus from the object at infinity to the object at the closest distance, the second lens group and the fourth lens group are moved in an optical axis direction along different trajectories from each other,
• the third lens group is moved in a direction intersecting the optical axis to perform camera shake correction,
• the following conditional expressions are satisfied;
• −3.3<f/f2<−1.8 (1)
• 0.85<f/f3<1.45 (2)
• 60<νd3p<100 (3)
• −0.5<(L3nf−L3nr)/(L3nf+L3nr)<−0.16 (4)
• where
• f:
• a focal length with respect to d line of the lens system in a state of being focused at infinity
• f2:
• a focal length with respect to d line of the second lens group
• f3:
• a focal length with respect to d line of the third lens group
• νd3p:
• an Abbe number with respect to d line of the positive lens of the third lens group
• L3nf:
• a paraxial radius of curvature of a surface of the negative lens of the third lens group on the object side
• L3nr:
• a paraxial radius of curvature of a surface of the negative lens of the third lens group on an image side.