That's correct, in non-A lenses the coupler lever only has to be actuated fully, or not at all. Since in A lenses this is the lever that sets the actual aperture it has to be calibrated accurately. Some non-A lenses will work this way, most will give inaccurate exposures. The voice of "experimental experience" speaking here. ;-)
Don > -----Original Message----- > From: Steve Jolly [mailto:[EMAIL PROTECTED] > Sent: Thursday, May 26, 2005 8:22 AM > To: [email protected] > Subject: Re: "A" need > > > Collin Brendemuehl wrote: > > Because of the backward compat. between AF/K/M lenses the > > levers all move the same distances. > > The aperture indicator lever moves the same distances. The stop-down > coupler doesn't. > > S >
