Zoom lens and imaging device

A zoom lens comprising:

• a first lens group having negative refractive power and a subsequent group in order from an object side to an image side, wherein
• the subsequent group includes, in order from an object side to an image side, a Gp1 group including one or more lens groups and having positive refractive power as a whole, a Gn1 group including one or more lens groups and having negative refractive power as a whole, a Gp2 group including one or more lens groups and having positive refractive power as a whole, and a Gn2 group including one or more lens groups and having negative refractive power as a whole, and
• an aperture diaphragm is disposed closer to an object side than the Gp2 group, an interval between adjacent lens groups changes at least during one of zooming and focusing, and a following expression is satisfied:
• 0.40<fn1/fn2<3.55 (1)
• 0.50<(m1−mp1)/fw<2.30 (2)
• 1.00<Lw/fw<9.00 (3)
• where
• fn1 is a focal length of the Gn1 group during infinity focus at a telephoto end,
• fn2 is a focal length of the Gn2 group during infinity focus at a telephoto end,
• m1 is an amount of movement of the first lens group during infinity focus when zooming from a wide angle end to a telephoto end,
• mp1 is an amount of movement of the Gp1 group during infinity focus during zooming from a wide angle end to a telephoto end,
• Lw is a total optical length of the zoom lens during infinity focus at a wide angle end, and
• fw is a focal length of the zoom lens during infinity focus at a wide angle end.