>From Boz's site I understand that the *istD mount lacks a stop-down coupler
on the body mount but does have the same six electric contacts as the KA
mount, plus a seventh electronic (digital) one. This digital contact
apparently communicates to the camera: 1) the focal legth of the lens; 2)
the lens to subject distance; 3) the lens dimensions; 4) MTF info; and 5)
the exact selected aperture. If this is the case - why doesn't the *istD
"know" the selected aperture when a F or FA lens has a manually set
aperture? I wouldn't have thought that the lack of a stop-down coupler on
this body would have mattered except when using A, M and K lenses.
