Used MAMIYA RB67 WAIST LEVEL FINDER

Opens with a single touch to provide bright screen viewing of the entire frame. Raising the center magnifier makes fine focusing quick and easy, while also creating a light-tight hood to shield the screen from extraneous light. Provision to accept diopter correction lenses. The built-in diopter correction is -1.5. (Waist Level Focusing Hood is supplied with RZ cameras).