No ROM connection on the adapter.
Diaphragm control of the lens is set manually.
Automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter.
"Stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body.
Made of aluminum.
Tamron Adaptall II Lens
Sony (D)SLR Camera
A77II A58 A99 A65 A57 A77 A900 A55 A35 A700 A580 A560 A550 A500 A450 A390 A350 A330 A300 A290 A230 A200 A100 A33
Konica Minolta MAXXUM/DYNAX