Zoom lens and imaging apparatus

A zoom lens consisting of, in order from an object side to an image side, a first lens group that has a negative refractive power, a middle group, and a final group,

• wherein during zooming, a spacing between the first lens group and the middle group changes, and a spacing between the middle group and the final group changes,
• during focusing, at least a part of the middle group moves along an optical axis as a focus group, and the first lens group and the final group remain stationary with respect to an image plane,
• the first lens group includes two or more negative meniscus lenses of which object side surfaces are convex surfaces,
• the middle group includes at least one positive lens,
• a back focal length of the zoom lens at an air conversion distance at a wide angle end in a state where an infinite distance object is in focus is Bfw,
• a focal length of the zoom lens at the wide angle end in the state where the infinite distance object is in focus is fw,
• a maximum half angle of view at the wide angle end in the state where the infinite distance object is in focus is ωw, and
• a partial dispersion ratio of the at least one positive lens of the middle group between a g line and a F line is θMp and an Abbe number based on a d line is vMp, and
• Conditional Expressions (1) and (18) are satisfied, which are represented by
• 0.35
• <
• Bfw
• /
• (
• fw
• ×
• tan
• ⁢
• ❘
• "\[LeftBracketingBar]"
• ω
• ⁢
• w
• ❘
• "\[RightBracketingBar]"
• )
• <
• 1.5
• ,
• and
• (
• 1
• )
• 0.01
• <
• θ
• ⁢
• Mp
• +
• 0.0018
• ×
• v
• ⁢
• Mp
• -
• 0.64833
• <
• 0.06
• .
• (
• 18
• )