A lens barrel includes front, intermediate, and rear barrels that hold front, intermediate and rear lens group, respectively. The relative distances among the barrels vary. The front barrel includes a lens barrier and a barrier actuating member. A barrier drive cam section rotates the barrier actuating member upon relative movement of the barrels. The intermediate barrel includes a first drive source for driving a shutter unit, a second drive source for driving a light amount control unit, and a third drive source for driving the intermediate lens group for image stabilization. The intermediate barrel has a rear lens group clearance section at an outer peripheral portion to avoid interference with a driving mechanism for the rear lens group, and a barrier clearance section adjacent to the first or second drive source in a peripheral portion to avoid interference with the barrier actuating member and the barrier drive cam section.