From: "Alin Flaider" <[EMAIL PROTECTED]> > > Think about A and up lenses - they all have electric contacts whose > pattern tell the camera the absolute value of lens widest aperture. > Now setting the actual aperture is a matter of setting the lever > position according to the difference between the max aperture and > the target one.
That makes sense. But all the A lenses have only one contact, don't they? Sounds like electric resistance values to me. That alone can't tell the camera house the absolute value of the largest aperture. My guess is that the camera actually figures out the max aperture from reading how high the lever is pushed by the coupler handler when the lens is mounted. Jostein
