A zoom lens consists of, in order from the object-side, a first lens-group having positive refractive power, and which is fixed during magnification change, a second lens-group having negative refractive power, and which moves during magnification change, a third lens-group having positive refractive power, and which is fixed during magnification change, a fourth lens-group having positive refractive power, and which moves during magnification change, and a fifth lens-group having negative refractive power, and which moves during magnification change. The first lens-group consists of, in order from the object-side, a front group having negative refractive power, a reflection member that bends an optical path and a rear group having positive refractive power. The fourth lens-group includes at least a cemented lens of a positive lens and a negative lens, and the following conditional expression (1) is satisfied: 0.8