Zoom lens and image capturing apparatus including the same

A zoom lens including a first lens unit having negative refractive power, a second lens unit having positive refractive power, and a rear lens group including one lens unit or more lens units, all of which are sequentially arranged from an object side to an image side in the zoom lens, the first lens unit is moved for zooming, and an interval between each of adjacent lens units is changed for zooming, the zoom lens comprising:

• an aperture stop,
• wherein the rear lens group includes a focus lens unit having negative refractive power that is moved to the image side in focusing from an infinite to a close distance and at least one lens unit arranged on an image side of the focus lens unit,
• wherein the first lens unit includes three or more negative lenses,
• wherein the focus lens unit consists of a cemented lens or a single lens, and
• wherein, where a distance from the aperture stop to a surface vertex of the focus lens unit positioned closest to the object side at a wide-angle end is Lfw, a distance from the aperture stop to an image plane at the wide-angle end is Ls, a curvature radius of a lens surface of the focus lens unit positioned closest to the object side is Ra, and a curvature radius of a lens surface of the focus lens unit positioned closest to the image side is Rb, inequalities
• 0.3
• <
• Lfw
• /
• Ls
• <
• 0.5
• 0.8
• <
• Rb + Ra
• /
• Rb - Ra
• <
• 2.2
• are satisfied.