Zoom lens and imaging apparatus including the same

An apparatus comprising:

• a zoom lens;
• and
• a sensor configured to receive an image formed by the zoom lens,
• wherein the zoom lens comprising a plurality of lens units, the plurality of lens units consisting of, a first lens unit with positive refractive power, a second lens unit with negative refractive power, an intermediate group including an aperture stop and at least one lens unit, and a rear group including at least two lens units placed in this order from an object side to an image side, wherein an interval between adjacent lens units changes during zooming,
• wherein a lens unit of the rear group that is placed closest to the object side has the strongest negative refractive power among lens units placed closer to the image side than the aperture stop,
• wherein, in zooming from a wide-angle end to a telephoto end, every lens unit included in the first lens unit, the intermediate group, and the rear group moves toward the object side, and the second lens unit moves along a convex trajectory toward the image side, and
• wherein the following inequalities are satisfied:
• 3.30<f|/|f2|<5.90,
• 1.40<|f2|/bfw<2.50, and
• 1.00<fn/f2<1.60,
• where f1 is a focal length of the first lens unit, f2 is a focal length of the second lens unit, bfw is a back focus of an entire system at a wide-angle end, and fn is a combined focal length of the rear group at the wide-angle end.