In an expensive zoom lens that has a zoom ratio of as high as about 5 and high optical performance and is very thin in its depth direction, the optical path of the optical system is easily bendable by reflecting optical members. The zoom lens includes a plurality of lens groups G1 to G5, and has a lens group F (G1) located nearest to the object side thereof. The first optical path bending is carried out by the first reflecting optical member PR located in the lens group F, and the second optical path bending is carried out by the second reflecting optical member RM located on an image side of the zoom lens with respect to the lens group F in a direction different from the first optical path bending direction. The lens group F remains substantially fixed with respect to an image plane I during zooming.