Imaging lens and imaging apparatus

An imaging lens consisting of, in order from the object side, a first lens group that is fixed relative to an image plane during focusing, a second lens group that is moved as a whole from the image side toward the object side during focusing from a distant object to a close object and as a whole has a positive refractive power, and third lens group that is fixed relative to the image plane during focusing,

• wherein the second lens group consists of, in order from the object side,
• a first cemented lens consisting of, in order from the object side, a biconvex lens and a negative lens having a smaller absolute value of radius of curvature of the object-side surface than that of the image-side surface, and
• a second cemented lens as a whole having a positive refractive power and consisting of, in order from the object side, a negative lens having a smaller absolute value of radius of curvature of the image-side surface than that of the object-side surface and a positive lens having a smaller absolute value of radius of curvature of the object-side surface than that of the image-side surface,
• the third lens group consists of one positive lens,
• a stop that is fixed relative to the image plane during focusing is disposed at a position between the most object-side lens surface of the first lens group and the most object-side lens surface of the second lens group, and
• all the condition expressions (1) to (5) below are satisfied:
• N21<N22 (1),
• ν22<ν21 (2),
• N24<N23 (3),
• ν23<ν24 (4), and
• 0.2<D/f<0.8 (5),
• where N21 is a refractive index with respect to the d-line of the biconvex lens of the first cemented lens, N22 is a refractive index with respect to the d-line of the negative lens of the first cemented lens, N23 is a refractive index with respect to the d-line of the negative lens of the second cemented lens, N24 is a refractive index with respect to the d-line of the positive lens of the second cemented lens, ν21 is an Abbe number with respect to the d-line of the biconvex lens of the first cemented lens, ν22 is an Abbe number with respect to the d-line of the negative lens of the first cemented lens, ν23 is an Abbe number with respect to the d-line of the negative lens of the second cemented lens, ν24 is an Abbe number with respect to the d-line of the positive lens of the second cemented lens, D is an equivalent air distance along the optical axis between the first cemented lens and the second cemented lens, and f is a focal length of the entire system when the imaging lens is focused on an object at infinity.