Zoom lens and image pickup apparatus

An image pickup apparatus comprising:

• a zoom lens;
• and
• an image sensor configured to receive an image formed by the zoom lens,
• wherein the zoom lens includes a plurality of lens units, the plurality of lens units consisting of, in order from an object side to an image side:
• a first lens unit having positive refractive power;
• a second lens unit having negative refractive power;
• and
• a rear group consisting of one or more lens units,
• wherein each distance between adjacent lens units changes during zooming, and the second lens unit does not move for zooming,
• wherein at least a part of the second lens unit moves in a direction including a component orthogonal to an optical axis during image stabilization,
• wherein a lens disposed closest to an object in the second lens unit has positive refractive power,
• wherein the rear group includes a focus lens unit that moves during focusing, and
• wherein the following inequality is satisfied:
• 0
• .
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• 3
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• D
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• 2
• /
• ft
• <
• 0
• .
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• 2
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• 6
• 3.
• <
• D
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• 1
• /
• D
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• 30.
• 4.
• <
• ❘
• "\[LeftBracketingBar]"
• (
• 1
• -
• β
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• ft
• 2
• )
• ⁢
• β
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• frt
• 2
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• "\[RightBracketingBar]"
• <
• 20.
• where D2 is a distance on an optical axis from a lens surface closest to an object of the second lens unit to a lens surface closest to an image plane of the second lens unit,
• ft is a focal length of the zoom lens at a telephoto end, and D1 is a distance on an optical axis from a lens surface closest to an object of the first lens unit to a lens surface closest to an image plane of the first lens unit, βft is a lateral magnification of the focus lens unit at the telephoto end, and βfrt is a combined lateral magnification of all lens units on the image side of the focus lens unit at the telephoto end.