Lens apparatus and camera

A lens apparatus comprising:

• a first holding member which holds a first lens unit;
• a second holding member which holds a second lens unit disposed closer to an image plane side than the first lens unit;
• a first cam barrel which includes a first cam portion driving the first holding member in an optical axis direction;
• a second cam barrel which includes a second cam portion driving the first cam barrel in the optical axis direction;
• and
• a third cam barrel member different from the second cam barrel, which includes a third cam portion driving the second holding member in the optical axis direction,
• wherein the lens apparatus can perform a zoom operation in a state where the lens apparatus protrudes from a main body and perform a housing operation in which the lens apparatus is housed into the main body,
• wherein the first and second cam portions have shapes for moving the first holding member during the zoom operation along a trajectory which is convex toward one side of the optical axis direction, and
• wherein the third cam portion has a shape for moving the second holding member during the zoom operation along a trajectory different from the moving trajectory of the first holding member.