This is a direct replacement for your 3x4 Series D or Super D's front standard that allows you to thread in a Dallmeyer Pentac or Air Ministries 8" f 2.9 . Installs in minutes without having to modify your camera. Will focus from 24" out to infinity with no mirror modification required. All the function of an Aero Liberator without the hassle.
LENS AND CAMERA NOT INCLUDED