David Blackburn , Aug 07, 2003; 02:54 p.m.
stop down metering just means that you have to meter at the aperture you are shooting at. unlike most AI lenses, where you set the aperture to where you want and it stays at full aperture until right before you take the picture.
that has a little on how to perform stop down metering. if you have the camera manual, that would also be another place to check. im not familiar with the lenses or with stop down metering, other than the definition.