The thickness of the lens is less than half compared to conventional lenses (22.5mm when powered off). It is the most compact* electronic pancake zoom lens (standard zoom lens). It also boasts high performance that meets the ZUIKO quality standard and constructed with 8 elements in 7 groups (3 aspherical elements, 1 ED element and 1 super HR element). This multi-functional compact lens also features electronic zooming which is useful for movie recording