Mabelsound, yes I did use the meter. The system is very convenient, altough a bit odd. You look trough the finder to see wich number is indicated by the meter and you select the same number on the lens. The f-stop ring can be turned so that either the f-stops or the special meter numbers are shown on the upper side of the lens. The advantage of this system is that measuring is always at full aperture and there is no need for a coupling between the lens and the camera.
Erik