Lens barrel

A lens barrel has a rotary frame, lens group frame, and shutter frame. The rotary frame has first and second cam grooves respectively on inner and outer peripheries as viewed in a radial direction. A first cam follower of the lens group frame and a second cam follower of the shutter frame are respectively engaged with the first and second grooves. A radial direction size the rotary frame is smaller than a sum of depths of the first and second grooves. The rotary frame includes a first region W1 only with the first groove, a region W0 with first and second grooves, and a region W2 only with the second groove. Positions of the first and second followers differ in a circumferential direction. At least one of the first and second followers has a non-contact portion not contacting with a groove wall of the corresponding groove in the region W0.