The adapter is relatively expensive, but it does differently than other adapters that what he should. Allows using existing older Sony / Minolta flashes the new Sony cameras (Nex / A7 / ...) without restriction. On my Sony HVL-F42AM A7 my work again and I have saved me buying a new flash. Best. The product policy of Sony to equip the new cameras with a hot shoe flash shoe that only looks like a standard hot shoe, but additionally mini contacts that you do not see at first glance, requires, however, I can not understand.