Pixco AF Confirmation chip Adapter With Glass For MD MC Lens to Minolta Sony MA A58 A65 A57 A77 A900 A300 A290 A230 A200 This adapter can helps you mount your Minolta MD/MC lens on Sony A adapter with AF confirm. Made of aluminiumand brass with chrome coating in black and silver finish. Allows focusing to infinity.with optic glass Supports AV (Aperture Priority) and Manual Mode. The chip enables camera viewfinder focus confirmation light and confirmation sound.