Zoom lens system and electronic image pickup apparatus using the same

摘要: A zoom lens system comprising, in order from an object side: a first unit comprising two components; and second one component, during zooming, space between the changing, having aspherical surfaces, at least surface of satisfying following condition: R1/hl 1.35, wherein R1 denotes paraxial radius curvature surface, hi length intersection chief ray reaching point maximum image height on to optical axis wide-angle end time when enters with angle incidence equal or larger than 36 degrees.