Zoom lens and imaging apparatus having four lens groups

An imaging apparatus comprising a zoom lens:

• wherein the zoom lens consists of four or fewer lens groups, comprising a first lens group that has a negative refractive power and a second lens group that has a positive refractive power, in order from an object side,
• wherein during zooming, distances between adjacent groups in a direction of an optical axis are changed due to movement of at least the first lens group,
• wherein the first lens group consists of a lens that has a convex surface toward the object side and has a negative refractive power, a biconcave lens, and a positive lens that has a convex surface toward the object side, in order from the object side,
• wherein the second lens group has at least a lens that has a concave surface toward an image side, a stop, a biconvex lens, and a negative lens that has a concave surface toward the image side, successively in order from the object side,
• wherein the second lens group has only one cemented lens,
• wherein a cemented surface of the cemented lens of the second lens group has a shape convex toward the image side,
• wherein a lens group closest to the image side in the zoom lens remains stationary during zooming, and
• wherein the lens group closest to the image side in the zoom lens consists of one positive lens.