Zoom lens and imaging apparatus

A zoom lens comprising, in order from an object side to an image side:

• a first lens group that has a positive refractive power;
• a second lens group that has a negative refractive power;
• a middle group that consists of two or three lens groups;
• and a final lens group that has a negative refractive power,
• wherein the middle group has a positive refractive power as a whole throughout an entire zoom range,
• during zooming, a spacing between the first lens group and the second lens group changes, a spacing between the second lens group and the middle group changes, and a spacing between the middle group and the final lens group changes, and all spacings of adjacent lens groups in the middle group change during zooming,
• the zoom lens includes a focus group that moves along an optical axis during focusing,
• the focus group has a negative refractive power, and
• a focal length of the zoom lens in a state where an infinite distance object is in focus at a wide angle end is fw, a focal length of the zoom lens in a state where the infinite distance object is in focus at a telephoto end is ft, a central thickness of a lens closest to the object side in the first lens group is d1, a distance on an optical axis from a lens surface closest to the object side in the first lens group to a lens surface closest to the image side in the first lens group is DG1, an Abbe number of a lens which is third from the object side in the first lens group based on a d line is νd3, and Conditional Expressions (1), (24) and (26) are satisfied, which are represented by
• 6
• <
• ft
• /
• fw
• <
• 30
• (
• 1
• )
• 0.06
• <
• d
• ⁢
• 1
• /
• DG
• ⁢
• 1
• <
• 0
• .
• 1
• ⁢
• 25
• (
• 24
• )
• 70
• <
• v
• ⁢
• d
• ⁢
• 3
• <
• 110.
• (
• 26
• )