SLR Magic Anamorphot 1.33x 50 Anamorphic Adapter SLR Magic Anamorphot 1.33x Anamorphic Adapter - Step-Up Ring Set (which consists of a 49 to 62mm & a 52 to 62mm and a 58 to 62mm step-up ring) Mounts to Lenses: Mounts to Lenses with 62mm Front Thread Mounting: Rear Mounting Threads: 62mm Front Filter Threads: 77mm Weight: 1.5 lbs