Standard zoom lens series olympus top profi olympus zuiko digital lens mount four thirds 43 lens speed 2 focal length 35 100 mm zoom factor 28 times suitable for sensor type four thirds 43 construction zoom lens area of use night photography astrophotography landscape photography focus auto focus internal focus af motor no internal af motor reduced frame size closest focusing distance 140 cm focal length equivalent to 35mm camera 70 200 mm l